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Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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1

CONMOW: Condition Monitoring for Offshore Wind Farms  

E-Print Network [OSTI]

practice the European project CONMOW (Condition Monitoring for Offshore Wind Farms) was started in November

Edwin Wiggelinkhuizen; Theo Verbruggen; Henk Braam; Luc Rademakers; Miguel Catalin Tipluica; Andrew Maclean; Axel Juhl Christensen; Edwin Becker; Pr?ftechnik Cm Gmbh (d; Dirk Scheffler; Nordex Energy Gmbh (d

2

Condition Monitoring of Offshore Wind Turbines.  

E-Print Network [OSTI]

?? The growing interest around offshore wind power, providing at the same time better wind conditions and fewer visual or environmental impacts, has lead many… (more)

Wisznia, Roman

2013-01-01T23:59:59.000Z

3

Principal wind turbines for a conditional portfolio approach to wind farms  

E-Print Network [OSTI]

We introduce a measure for estimating the best risk-return relation of power production in wind farms within a given time-lag, conditioned to the velocity field. The velocity field is represented by a scalar that weighs the influence of the velocity at each wind turbine at present and previous time-steps for the present "state" of the wind field. The scalar measure introduced is a linear combination of the few turbines, that most influence the overall power production. This quantity is then used as the condition for computing a conditional expected return and corresponding risk associated to the future total power output.

Lopes, Vitor V; Raischel, Frank; Lind, Pedro G

2014-01-01T23:59:59.000Z

4

Energy Department Offers Conditional Commitment to Cape Wind Offshore Wind Generation Project  

Broader source: Energy.gov [DOE]

The Department of Energy today announced the first step toward issuing a $150 million loan guarantee to support the construction of the Cape Wind offshore wind project with a conditional commitment to Cape Wind Associates, LLC.

5

DOE Offers Conditional Commitment to Cape Wind Offshore Wind Generation Project  

Broader source: Energy.gov [DOE]

DOE recently announced the first step toward issuing a $150 million loan guarantee to support the construction of the Cape Wind offshore wind project with a conditional commitment to Cape Wind Associates, LLC.

6

DOE Offers Conditional Commitment to Cape Wind Offshore Wind...  

Office of Environmental Management (EM)

Secretary Ernest Moniz. The proposed Cape Wind project would use 3.6-MW offshore wind turbines that would provide a majority of the electricity needed for Cape Cod, Nantucket,...

7

Oxygen Loss from Venus and the Influence of Extreme Solar Wind Conditions  

E-Print Network [OSTI]

the influence of extreme solar wind conditions on O + escapeand the Influence of Extreme Solar Wind Conditions by Tessand the Influence of Extreme Solar Wind Conditions Copyright

McEnulty, Tess

2012-01-01T23:59:59.000Z

8

Operating wind turbines in strong wind conditions by using feedforward-feedback control  

Science Journals Connector (OSTI)

Due to the increasing penetration of wind energy into power systems, it becomes critical to reduce the impact of wind energy on the stability and reliability of the overall power system. In precedent works, Shen and his co-workers developed a re-designed operation schema to run wind turbines in strong wind conditions based on optimization method and standard PI feedback control, which can prevent the typical shutdowns of wind turbines when reaching the cut-out wind speed. In this paper, a new control strategy combing the standard PI feedback control with feedforward controls using the optimization results is investigated for the operation of variable-speed pitch-regulated wind turbines in strong wind conditions. It is shown that the developed control strategy is capable of smoothening the power output of wind turbine and avoiding its sudden showdown at high wind speeds without worsening the loads on rotor and blades.

Ju Feng; Wen Zhong Sheng

2014-01-01T23:59:59.000Z

9

Condition Monitoring of Wind Turbines Based on Amplitude Demodulation  

E-Print Network [OSTI]

Condition Monitoring of Wind Turbines Based on Amplitude Demodulation Yassine Amirat University. In order to make wind turbine reliable and competitive, it is important to reduce the operational-stationary behavior. Index Terms--Wind turbine, Fault Detection, Bearings, Signal Processing, Amplitude Modulation I

Paris-Sud XI, Université de

10

A comparison of wind speed shears for frontal and undisturbed synoptic conditions  

Science Journals Connector (OSTI)

Wind speed shear parameters derived from data collected at ... conditions (cold frontal passage), all undisturbed winds, undisturbed high winds, and undisturbed low winds. The exponential values of the wind speed

Ching-Ming Sheih

11

Secretary Chu Offers $117 Million Conditional Commitment for Hawaii Wind  

Broader source: Energy.gov (indexed) [DOE]

Offers $117 Million Conditional Commitment for Hawaii Offers $117 Million Conditional Commitment for Hawaii Wind Power Project Secretary Chu Offers $117 Million Conditional Commitment for Hawaii Wind Power Project March 5, 2010 - 12:00am Addthis Washington DC --- U.S. Secretary of Energy Steven Chu today announced that the Department of Energy has offered a conditional commitment on a $117 million loan guarantee to finance the construction and start-up of an innovative 30 megawatt (MW) wind energy project in Kahuku, Hawaii. Kahuku Wind Power, LLC will install twelve 2.5 MW wind turbine generators along with a battery energy storage system for electricity load stability. The loan guarantee is being supported by funds made available from the American Recovery and Reinvestment Act. "This investment will create jobs and cut our dependence on oil, while

12

Representing mechanical assemblies with features and mating conditions  

E-Print Network [OSTI]

ACKNOWLEDGEMENTS . TABLE OF CONTENTS LIST OF FIGURES . CHAPTER vtn I INTRODUCTION I. 1 I. 2 1. 3 I. 4 Ingredients of a Good Design Representation . . . . . . . . . . . . . What is a 'Feature' . Design-with-Features vs. Feature Extraction... . . . . . . . . . . . . . . . Current Research: Features and Mating Conditions for Assemblies 1 3 7 II REVIEW OF RELATED LITERATURE 10 II. 1 Representation of Parts II. 2 Representation of Assemblies . II. 3 Relation to Current Research 10 14 18 m FEATURE-BASED PART...

Qamar, Sayyad Zahid

2012-06-07T23:59:59.000Z

13

Characteristics of Wind Turbines Under Normal and Fault Conditions: Preprint  

SciTech Connect (OSTI)

This paper investigates the characteristics of a variable-speed wind turbine connected to a stiff or weak grid under normal and fault conditions and the role of reactive power compensation.

Muljadi, E.; Butterfield, C. P.; Parsons, B.; Ellis, A.

2007-02-01T23:59:59.000Z

14

Can Satellite Sampling of Offshore Wind Speeds Realistically Represent Wind Speed Distributions? Part II: Quantifying Uncertainties Associated with Distribution Fitting Methods  

Science Journals Connector (OSTI)

Remote sensing tools represent an attractive proposition for measuring wind speeds over the oceans because, in principle, they also offer a mechanism for determining the spatial variability of flow. Presented here is the continuation of research ...

S. C. Pryor; M. Nielsen; R. J. Barthelmie; J. Mann

2004-05-01T23:59:59.000Z

15

Prediction, operations, and condition monitoring in wind energy Andrew Kusiak a,*, Zijun Zhang b  

E-Print Network [OSTI]

Review Prediction, operations, and condition monitoring in wind energy Andrew Kusiak a,*, Zijun 2013 Available online 23 August 2013 Keywords: Wind energy Wind speed prediction Wind turbine control Condition monitoring and fault detection a b s t r a c t Recent developments in wind energy research

Kusiak, Andrew

16

Wind Turbine Gearbox Condition Monitoring Round Robin Study - Vibration Analysis  

SciTech Connect (OSTI)

The Gearbox Reliability Collaborative (GRC) at the National Wind Technology Center (NWTC) tested two identical gearboxes. One was tested on the NWTCs 2.5 MW dynamometer and the other was field tested in a turbine in a nearby wind plant. In the field, the test gearbox experienced two oil loss events that resulted in damage to its internal bearings and gears. Since the damage was not severe, the test gearbox was removed from the field and retested in the NWTCs dynamometer before it was disassembled. During the dynamometer retest, some vibration data along with testing condition information were collected. These data enabled NREL to launch a Wind Turbine Gearbox Condition Monitoring Round Robin project, as described in this report. The main objective of this project was to evaluate different vibration analysis algorithms used in wind turbine condition monitoring (CM) and find out whether the typical practices are effective. With involvement of both academic researchers and industrial partners, the project sets an example on providing cutting edge research results back to industry.

Sheng, S.

2012-07-01T23:59:59.000Z

17

Acoustic condition monitoring of wind turbines: Tip faults  

Science Journals Connector (OSTI)

As a significant and growing source of the world’s energy wind turbine reliability is becoming a major concern. At least two fault detection techniques for condition monitoring of wind turbine blades have been reported in early literature i.e. acoustic emissions and optical strain sensors. These require off-site measurement. The work presented here offers an alternative non-contact fault detection method based on the noise emission from the turbine during operation. An investigation has been carried out on a micro wind turbine under laboratory conditions. 4 severity levels for a fault have been planted in the form of added weight at the tip of one blade to simulate inhomogeneous debris or ice build up. Acoustic data is obtained at a single microphone placed in front of the rotor. Two prediction methods have been developed and tested on real data: one based on a single feature - rotational frequency spectral magnitude; and another based on a fuzzy logic interference using two inputs - spectral peak and rotational peak variation with time. Results show that the single spectral peak feature can be used to determine fault severity in ranges. The implementation of the fuzzy logic using a further input feature is shown to significantly improve the detection accuracy.

Daniel J. Comboni; Bruno Fazenda

2012-01-01T23:59:59.000Z

18

Future of Condition Monitoring for Wind Turbines | OpenEI Community  

Open Energy Info (EERE)

of Condition Monitoring for Wind Turbines > Posts by term Content Group Activity By term Q & A Feeds...

19

Conditional Simulation of a Gust-Front Wind Field Lijuan Wanga  

E-Print Network [OSTI]

Conditional Simulation of a Gust-Front Wind Field Lijuan Wanga , Ahsan Kareema a NatHaz Modeling the conditional simulation of gust-front wind velocities are presented to generate time series at locations effects on structures, the simulation of wind velocity conditional upon the availability of measured

Kareem, Ahsan

20

USE OF A SPATIALLY ADAPTIVE THRESHOLDING METHOD FOR THE CONDITION MONITORING OF A WIND TURBINE GEARBOX  

E-Print Network [OSTI]

USE OF A SPATIALLY ADAPTIVE THRESHOLDING METHOD FOR THE CONDITION MONITORING OF A WIND TURBINE.Antoniadou@sheffield.ac.uk ABSTRACT Condition monitoring of wind turbine gearboxes is an important practice in order to de- termine the state of the wind turbine drivetrain. In this way reparative actions could be taken whenever needed

Boyer, Edmond

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Atmospheric Dispersion Model Validation in Low Wind Conditions  

SciTech Connect (OSTI)

Atmospheric plume dispersion models are used for a variety of purposes including emergency planning and response to hazardous material releases, determining force protection actions in the event of a Weapons of Mass Destruction (WMD) attack and for locating sources of pollution. This study provides a review of previous studies that examine the accuracy of atmospheric plume dispersion models for chemical releases. It considers the principles used to derive air dispersion plume models and looks at three specific models currently in use: Aerial Location of Hazardous Atmospheres (ALOHA), Emergency Prediction Information Code (EPIcode) and Second Order Closure Integrated Puff (SCIPUFF). Results from this study indicate over-prediction bias by the EPIcode and SCIPUFF models and under-prediction bias by the ALOHA model. The experiment parameters were for near field dispersion (less than 100 meters) in low wind speed conditions (less than 2 meters per second).

Sawyer, Patrick

2007-11-01T23:59:59.000Z

22

Simulation and Optimization of Wind Farm Operations under Stochastic Conditions  

E-Print Network [OSTI]

generation model, wind speed model, and maintenance model. We provide practical insights gained by examining di erent maintenance strategies. To the best of our knowledge, our simulation model is the rst discrete-event simulation model for wind farm...

Byon, Eunshin

2011-08-08T23:59:59.000Z

23

Condition Monitoring Benefit for Operation Support of Offshore Wind Turbines  

Science Journals Connector (OSTI)

As more offshore wind parks are commissioned, the focus will inevitably ... case, both short-term risks associated with wind turbine component assemblies, and long-term risks related...

Dr. Sebastian Thöns; Dr. David McMillan

2014-01-01T23:59:59.000Z

24

Wind Turbines Condition Monitoring and Fault Diagnosis Using Generator Current Amplitude  

E-Print Network [OSTI]

Wind Turbines Condition Monitoring and Fault Diagnosis Using Generator Current Amplitude in the research of renewable energy sources. In order to make wind turbines as competitive as the classical detection in a Doubly-Fed Induction Generator (DFIG) based wind turbine for stationary and nonstationary

Paris-Sud XI, Université de

25

Influences of offshore environmental conditions on wind shear profile parameters in Nantucket Sound  

E-Print Network [OSTI]

Influences of offshore environmental conditions on wind shear profile parameters in Nantucket Sound@ecs.umass.edu ABSTRACT Simultaneous wind resource and oceanographic data are available from an offshore monitoring tower how oceanographic data can be used to aid offshore wind resource assessment evaluations. This study

Massachusetts at Amherst, University of

26

EXPERIENCES WITH SONIC WIND SENSORS IN OPERATIONAL CONDITIONS Wiel M.F. Wauben  

E-Print Network [OSTI]

% occur when the wind is parallel to a transducer pair with an inclination angle of about 10° (Wauben1 EXPERIENCES WITH SONIC WIND SENSORS IN OPERATIONAL CONDITIONS Wiel M.F. Wauben R&D Information investigations indicate that sonic wind sensors can be considered for operational use. In 2008 KNMI selected a 2D

Wauben, Wiel

27

Wind modelling based on wind input data conditions using Weibull distribution  

Science Journals Connector (OSTI)

Weibull distribution can be used to model the wind speed distribution at a particular site and hence, it can help in wind resource assessment (WRA) of a site. By calculating the shape (k) and scale (c) parameters for Weibull distribution, the wind speed frequency curve for a site can be made. Once this wind speed distribution for site is determined, it can be convolved with the power curve for a wind turbine and the annual energy output from the site can be determined. This paper presents how the Weibull distribution is used to determine the wind speed distribution for Vadravadra site in Gau Island of Fiji and how closely the annual energy output from the modelled wind speed distribution matches with the annual energy output using the actual wind speed distribution. It also presents how k is related to the turbulence intensity for a site; how the c is related to the annual mean wind speed and how a formula for estimating c is derived at a new height.

R.D. Prasad; R.C. Bansal; M. Sauturaga

2009-01-01T23:59:59.000Z

28

Social barriers in wind power implementation in The Netherlands: Perceptions of wind power entrepreneurs and local civil servants of institutional and social conditions in realizing wind power projects  

Science Journals Connector (OSTI)

The primary social factors for the implementation of wind energy projects in a liberalized market are entrepreneurs willing to invest. Understanding conditions that trigger entrepreneurs to invest in these projects, and understanding conditions that determine the chance of success for entrepreneurs to implement and exploit their projects, is vital for setting up effective policies to stimulate wind electricity generation. This paper analyses the way in which wind power entrepreneurs and local civil servants experience social and institutional conditions in the operational process of realizing wind power projects, and their perceptions of policy implications. A groups support system in an electronic board room was used to analyze the perceptions. From the analysis it was concluded that wind power entrepreneurs and civil servants share the opinion that the institutionally embedded power position of local politicians, and the sensitiveness of the local political debate for the popular opinion are most critical for project realization. With regard to the proposed solutions, both groups differ in their approach. Entrepreneurs stress procedural solutions, such as limiting the possibilities to appeal, reducing the complexity of the formal authorization trajectory and using a top down planning approach. Civil servants stress more strategic solutions, such as providing more public information on the necessity of wind power for local politicians and citizens, and community involvement in planning processes. Finally, the analysis explains that steering strategies that have been developed at the national level to solve the planning problems at the operational level do not address the right problems.

Susanne Agterbosch; Pieter Glasbergen; Walter J.V. Vermeulen

2007-01-01T23:59:59.000Z

29

Future of Condition Monitoring for Wind Turbines | OpenEI Community  

Open Energy Info (EERE)

Future of Condition Monitoring for Wind Turbines Future of Condition Monitoring for Wind Turbines Home > Features > Groups Content Group Activity By term Q & A Feeds Content type Blog entry Discussion Document Event Poll Question Keywords Author Apply Oeir Try supergen-wind (http://www.... Posted by: Oeir 25 Nov 2013 - 14:25 JaredHall Searching for Data Sets on existing turbines with various sensors Posted by: JaredHall 30 Jul 2013 - 01:34 In order to test our hypothesis and aid in our building of next-gen condition/health monitoring software for wind turbines we are searching for data sets (Scada or othewise) from exisiting installations.... Group links This group has no group-specific links. Groups Menu You must login in order to post into this group. Recent content Try supergen-wind (http://www....

30

Wind Turbine Drivetrain Condition Monitoring During GRC Phase 1 and Phase 2 Testing  

SciTech Connect (OSTI)

This report will present the wind turbine drivetrain condition monitoring (CM) research conducted under the phase 1 and phase 2 Gearbox Reliability Collaborative (GRC) tests. The rationale and approach for this drivetrain CM research, investigated CM systems, test configuration and results, and a discussion on challenges in wind turbine drivetrain CM and future research and development areas, will be presented.

Sheng, S.; Link, H.; LaCava, W.; van Dam, J.; McNiff, B.; Veers, P.; Keller, J.; Butterfield, S.; Oyague, F.

2011-10-01T23:59:59.000Z

31

Future of Condition Monitoring for Wind Turbines - Q & A | OpenEI...  

Open Energy Info (EERE)

- Q & A Home > Future of Condition Monitoring for Wind Turbines Content Group Activity By term Q & A Feeds Question Post date Answers Searching for Data Sets on existing turbines...

32

Future of Condition Monitoring for Wind Turbines | OpenEI Community  

Open Energy Info (EERE)

Future of Condition Monitoring for Wind Turbines Content Group Activity By term Q & A Feeds There are no feeds from external sites for this group. Groups Menu You must login in...

33

Dynamic modeling and direct power control of wind turbine driven DFIG under unbalanced network voltage conditions  

Science Journals Connector (OSTI)

This paper proposes an analysis and a direct power control (DPC) design of a wind turbine driven doubly-fed induction generator (DFIG) under unbalanced network voltage conditions. A DFIG model described in the po...

Jia-bing Hu; Yi-kang He; Lie Xu

2008-12-01T23:59:59.000Z

34

The Potential for Wind Induced Ventilation to Meet Occupant Comfort Conditions  

E-Print Network [OSTI]

This paper describes a simple graphic tool that enables a building designer to evaluate the potential for wind induced ventilation cooling in several climate zones. Long term weather data were analyzed to determine the conditions for which available...

Byrne, S. J.; Huang, Y. J.; Ritschard, R. L.; Foley, D. M.

1985-01-01T23:59:59.000Z

35

Near-surface meteorological conditions associated with active resuspension of dust by wind erosion  

SciTech Connect (OSTI)

The meteorological conditions associated with extreme winds in the lee of the Colorado Rocky Mountains were studied from the viewpoint of dust resuspension and dispersion. Wind, dispersion, temperature, and dew point conditions occurring near the surface were discussed in detail for a selected event. Near-surface wind speeds were compared to observations made at a standard sampling height. These field data were developed to aid in validation and interpretation of wind tunnel observations and application of dispersion models to wind erosion resuspension. Three conclusions can immediately be drawn from this investigation. First, wind storms in nature are quite gusty, with gusts exceeding the mean speed by 50 percent or more. However, wind direction variations are small by comparison. Thus, wind tunnel studies should be able to simulate the large along-flow turbulence, while keeping cross-flow turbulence to a moderate level. This also has an application to the puff modeling of high winds. Puff models normally assume that the along-flow dispersion coefficient is equal to the cross-flow value. This study suggests that the along-flow coefficient should be much larger than its cross-flow counterpart. Another conclusion involves the usual assumption of Pasquill-Gifford stability class D. In the event studied here, the atmosphere was well mixed with near-neutral thermal stability, yet the horizontal dispersion stability class varied from G to A. Thus, an assumption of Class D horizontal dispersion during high winds would not have been valid during this case. A final conclusion involves the widely applied assumption of a logarithmic wind speed profile during high wind events. This study has indicated that such an assumption is appropriate.

Hodgin, C.R.

1982-01-01T23:59:59.000Z

36

Pre-convective environmental conditions indicative of non-tornadic severe thunderstorm winds over Southeast Florida  

E-Print Network [OSTI]

PRE-CONVECTIVE ENVIRONMENTAL CONDITIONS INDICATIVE OF NON-TORNADIC SEVERE THUNDERSTORM WINDS OVER SOUTHEAST FLORIDA A Thesis by JEFFREY MICHAEL WILHELM Submitted to the Graduate College of Texas ARM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1987 Major Subject: Meteorology PRE-CONVECTIVE ENVIRONMENTAL CONDITIONS INDICATIVE OF NON-TORNADIC SEVERE THUNDERSTORM WINDS OVER SOUTHEAST FLORIDA A Thesis by JEFFREY MICHAEL WILHELM Approved...

Wilhelm, Jeffrey Michael

2012-06-07T23:59:59.000Z

37

Final Technical Report Recovery Act: Online Nonintrusive Condition Monitoring and Fault Detection for Wind Turbines  

SciTech Connect (OSTI)

The penetration of wind power has increased greatly over the last decade in the United States and across the world. The U.S. wind power industry installed 1,118 MW of new capacity in the first quarter of 2011 alone and entered the second quarter with another 5,600 MW under construction. By 2030, wind energy is expected to provide 20% of the U.S. electricity needs. As the number of wind turbines continues to grow, the need for effective condition monitoring and fault detection (CMFD) systems becomes increasingly important [3]. Online CMFD is an effective means of not only improving the reliability, capacity factor, and lifetime, but it also reduces the downtime, energy loss, and operation and maintenance (O&M) of wind turbines. The goal of this project is to develop novel online nonintrusive CMFD technologies for wind turbines. The proposed technologies use only the current measurements that have been used by the control and protection system of a wind turbine generator (WTG); no additional sensors or data acquisition devices are needed. Current signals are reliable and easily accessible from the ground without intruding on the wind turbine generators (WTGs) that are situated on high towers and installed in remote areas. Therefore, current-based CMFD techniques have great economic benefits and the potential to be adopted by the wind energy industry. Specifically, the following objectives and results have been achieved in this project: (1) Analyzed the effects of faults in a WTG on the generator currents of the WTG operating at variable rotating speed conditions from the perspective of amplitude and frequency modulations of the current measurements; (2) Developed effective amplitude and frequency demodulation methods for appropriate signal conditioning of the current measurements to improve the accuracy and reliability of wind turbine CMFD; (3) Developed a 1P-invariant power spectrum density (PSD) method for effective signature extraction of wind turbine faults with characteristic frequencies in the current or current demodulated signals, where 1P stands for the shaft rotating frequency of a WTG; (4) Developed a wavelet filter for effective signature extraction of wind turbine faults without characteristic frequencies in the current or current demodulated signals; (5) Developed an effective adaptive noise cancellation method as an alternative to the wavelet filter method for signature extraction of wind turbine faults without characteristic frequencies in the current or current demodulated signals; (6) Developed a statistical analysis-based impulse detection method for effective fault signature extraction and evaluation of WTGs based on the 1P-invariant PSD of the current or current demodulated signals; (7) Validated the proposed current-based wind turbine CMFD technologies through extensive computer simulations and experiments for small direct-drive WTGs without gearboxes; and (8) Showed, through extensive experiments for small direct-drive WTGs, that the performance of the proposed current-based wind turbine CMFD technologies is comparable to traditional vibration-based methods. The proposed technologies have been successfully applied for detection of major failures in blades, shafts, bearings, and generators of small direct-drive WTGs. The proposed technologies can be easily integrated into existing wind turbine control, protection, and monitoring systems and can be implemented remotely from the wind turbines being monitored. The proposed technologies provide an alternative to vibration-sensor-based CMFD. This will reduce the cost and hardware complexity of wind turbine CMFD systems. The proposed technologies can also be combined with vibration-sensor-based methods to improve the accuracy and reliability of wind turbine CMFD systems. When there are problems with sensors, the proposed technologies will ensure proper CMFD for the wind turbines, including their sensing systems. In conclusion, the proposed technologies offer an effective means to achieve condition-based smart maintenance for wind turbines and have a gre

Wei Qiao

2012-05-29T23:59:59.000Z

38

Standardization of raw wind speed data under complex terrain conditions: A data-driven scheme  

Science Journals Connector (OSTI)

Abstract Direct usage of raw wind data without modification of topographic and/or terrain effects may result in remarkable errors. Thus, standardization of raw wind datasets is of great importance to remove these influences. But, the existing standardization methods are mainly applicable for flat terrains, which may become inappropriate under complex terrain conditions. This paper presents a data-driven standardization scheme which can be applied for different terrains including complex terrains. Although this scheme is established based on wind profile records at a reference station equipped with both an anemometer at a near-ground height and a Doppler radar profiler system, it can be used for the standardization of surface winds not only at the reference station but also at other surrounding stations with only surface observation instruments. Thus, the proposed data-driven scheme is efficient and economic. As applications of this scheme, correction factors to convert raw wind speeds at about 50 weather stations in Hong Kong to those over a reference terrain are estimated. To verify the effectiveness of the proposed standardization scheme, a wind tunnel testing involved the topographic model of a weather station has been conducted. The standardization results via the proposed scheme and the wind tunnel testing are in good agreement. The proposed methodology and relevant results can be used for the analysis of topographic effects on wind speeds over complex terrains.

Y.C. He; P.W. Chan; Q.S. Li

2014-01-01T23:59:59.000Z

39

Investigation of Various Condition Monitoring Techniques Based on a Damaged Wind Turbine Gearbox  

SciTech Connect (OSTI)

This paper is a continuation of a 2009 paper presented at the 7th International Workshop on Structural Health Monitoring that described various wind turbine condition-monitoring techniques. This paper presents the results obtained by various condition- monitoring techniques from a damaged Gearbox Reliability Collaborative test gearbox.

Sheng, S.

2011-10-01T23:59:59.000Z

40

Fault detection and diagnosis within a wind turbine mechanical braking system using condition monitoring  

Science Journals Connector (OSTI)

Renewable energy sources have a key role to play in the global energy mix as a means of reducing the impact of energy production on climate change. Wind energy is the most developed of all renewable energy technologies with more than 200 GW of globally installed capacity as of 2011. Analyses of wind farm maintenance costs show that up to 40% of the outlay is related to unexpected component failures that lead to costly unscheduled amendments. Wind farm operators are constantly looking for new technological developments in condition monitoring that can contribute to the minimisation of wind turbine maintenance expenditure. Early fault detection through condition monitoring can help prevent major breakdowns as well as significantly decrease associated costs. Moreover it enables the optimisation of maintenance schedules, reduces downtime, increases asset availability and enhances safety and operational reliability. Faults in the braking system are of particularly concern since they can result in catastrophic failure of the wind turbine. The present study investigates online condition monitoring based on voltages and currents for mechanical wind turbine brake system fault diagnosis.

M. Entezami; S. Hillmansen; P. Weston; M.Ph. Papaelias

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

A hybrid measure-correlate-predict method for long-term wind condition assessment  

Science Journals Connector (OSTI)

Abstract This paper develops a hybrid measure-correlate-predict (MCP) strategy to assess long-term wind resource variations at a farm site. The hybrid MCP method uses recorded data from multiple reference stations to estimate long-term wind conditions at a target wind plant site with greater accuracy than is possible with data from a single reference station. The weight of each reference station in the hybrid strategy is determined by the (i) distance and (ii) elevation differences between the target farm site and each reference station. In this case, the wind data is divided into sectors according to the wind direction, and the MCP strategy is implemented for each wind direction sector separately. The applicability of the proposed hybrid strategy is investigated using five MCP methods: (i) the linear regression; (ii) the variance ratio; (iii) the Weibull scale; (iv) the artificial neural networks; and (v) the support vector regression. To implement the hybrid MCP methodology, we use hourly averaged wind data recorded at five stations in the state of Minnesota between 07-01-1996 and 06-30-2004. Three sets of performance metrics are used to evaluate the hybrid MCP method. The first set of metrics analyze the statistical performance, including the mean wind speed, wind speed variance, root mean square error, and mean absolute error. The second set of metrics evaluate the distribution of long-term wind speed; to this end, the Weibull distribution and the Multivariate and Multimodal Wind Distribution models are adopted. The third set of metrics analyze the energy production of a wind farm. The best hybrid MCP strategy from 256 different combinations of MCP algorithms and reference stations is investigated and selected. The results illustrate that the many-to-one correlation in such a hybrid approach can provide a more reliable prediction of long-term on-site wind variations than that provided by the one-to-one correlations. The accuracy of the hybrid MCP method is found to be highly sensitive to the combination of individual MCP algorithms and reference stations used. It is also observed that the best combination of MCP algorithms is influenced by the length of the concurrent short-term correlation period.

Jie Zhang; Souma Chowdhury; Achille Messac; Bri-Mathias Hodge

2014-01-01T23:59:59.000Z

42

EU NATO Advanced Research Workshop "Hybrid SolarWind Systems: Effective Implementation Conditions", Tashkent, Uzbekistan, 2224 May, 2002.  

E-Print Network [OSTI]

Implementation Conditions", Tashkent, Uzbekistan, 2224 May, 2002. SOLAR AND WIND RESOURCES ESTIMATION resources of solar and wind energies. This paper presents some of the means and tools for estimation. 1 of energy development. In this paper, we propose a small review of tools for measuring solar and wind

Paris-Sud XI, Université de

43

WORM: A new open road line source model for low wind speed conditions  

Science Journals Connector (OSTI)

Emission from road traffic constitutes one of the most important sources of air pollution in urban areas. This paper describes a newly developed air pollution dispersion model for open roads and highways called WORM (Weak Wind Open Road Model), and give some results using this model at Nordbysletta, Norway, in the period 1 January 200215 April 2002. Generally, a good correspondence was found between observed and model-predicted concentrations of nitrogen oxides (NOx), even in periods with low wind speed and (strongly) stable atmospheric conditions.

S.E. Walker

2011-01-01T23:59:59.000Z

44

Ion escape from Mars as a function of solar wind conditions: A statistical study Hans Nilsson a,*, Ella Carlsson a  

E-Print Network [OSTI]

- mately the same bulk flow energy. We did not find any clear correlation between the solar EUV flux the effective obstacle to the solar wind flow, forming a mag- netic pile up region between the outer magneticIon escape from Mars as a function of solar wind conditions: A statistical study Hans Nilsson a

California at Berkeley, University of

45

Representing the Effects of Long-Range Transport and Lateral Boundary Conditions in Regional Air Pollution Models  

Science Journals Connector (OSTI)

Both observational and modeling studies have demonstrated that pollutants near the Earth’s surface can be convectively lofted to higher altitudes where strong winds can efficiently transport them from one contine...

Rohit Mathur; Shawn Roselle; Jeffrey Young…

2014-01-01T23:59:59.000Z

46

Assessment and Validation of Oil Sensor Systems for On-line Oil Condition Monitoring of Wind Turbine Gearboxes  

Science Journals Connector (OSTI)

Abstract The gearbox oil and the wind turbine gearbox condition are correlated. The oil can give the wind turbine operator the necessary information to plan maintenance and avoid costly repairs. Therefore, a test bench that can reproduce the gearbox operating conditions would be necessary to test oil-sensors. This paper presents a first testing approach using a Highly Accelerated Life Test / Highly Accelerated Stress Screening test chamber. It allows assessing the performance of oil properties sensors under extreme ambient temperature and vibration levels, based on measurements from a wind turbine gearbox. Results from a test on an oil properties sensor are presented and discussed.

D. Coronado; C. Kupferschmidt

2014-01-01T23:59:59.000Z

47

Intra-hour wind power variability assessment using the conditional range metric : quantification, forecasting and applications.  

E-Print Network [OSTI]

??The research presented herein concentrates on the quantification, assessment and forecasting of intra-hour wind power variability. Wind power is intrinsically variable and, due to the… (more)

Boutsika, Thekla

2013-01-01T23:59:59.000Z

48

Wind Conditions in a Fjordlike Bay and Predictions of Wind Speed Using Neighboring Stations Employing Neural Network Models  

Science Journals Connector (OSTI)

This paper evaluates the applicability of neural networks for estimating wind speeds at various target locations using neighboring reference locations along the south coast of Newfoundland, Canada. The stations were chosen to cover a variety of ...

Jens J. Currie; Pierre J. Goulet; Andry W. Ratsimandresy

2014-06-01T23:59:59.000Z

49

Adapting and calibration of existing wake models to meet the conditions inside offshore wind farms. Page 1 Adapting and calibration of existing wake models  

E-Print Network [OSTI]

Adapting and calibration of existing wake models to meet the conditions inside offshore wind farms@emd.dk #12;Adapting and calibration of existing wake models to meet the conditions inside offshore wind farms inside offshore wind farms" has as purpose to improve the existing PARK models for calculating the wake

50

Generation risk assessment in volatile conditions with wind, hydro, and natural gas units  

Science Journals Connector (OSTI)

This paper studies a generating company (GENCO)’s midterm (a few months to a year) scheduling payoffs and risks in volatile operating conditions. The proposed algorithm considers the integration of intermittent wind units into a GENCO’s generation assets and coordinates the GENCO’s hourly wind generation schedule with that of natural gas (NG) units (with volatile gas prices) and hydro units (with water inflow forecast) for maximizing the GENCO’s payoff. The proposed midterm GENCO model applies market price forecasts to the risk-constrained stochastic price-based unit commitment (PBUC) for calculating the GENCO’s risk in energy and ancillary services markets. The proposed PBUC minimizes the cost of (a) NG contracts, storage, startup and shutdown, (b) startup and shutdown of cascaded hydro units, and (c) penalty for defaulting on the scheduled power delivery. Simulation results show that the diversification of generating assets including bilateral contracts (BCs) could enhance the GENCO’s midterm planning by increasing the expected payoff and decreasing the financial risk.

Cem Sahin; Mohammad Shahidehpour; Ismet Erkmen

2012-01-01T23:59:59.000Z

51

Wind energy, with an annual growth of about 30%, represents one of the fastest growing renewable energy sources. Continuous long-term monitoring of wind turbines can greatly reduce maintenance  

E-Print Network [OSTI]

renewable energy sources. Continuous long-term monitoring of wind turbines can greatly reduce maintenance the profitability of wind turbines. A decentralized wind turbine monitoring system has been developed and installed on a 500 kW wind turbine in Germany. During its operation, temporary malfunctions of the installed sensing

Stanford University

52

DOE's NREL and LLNL team with NOAA and University of Colorado to Study Wind Inflow Conditions  

Broader source: Energy.gov [DOE]

To gain new insights into turbine wind wakes, the U.S. Department of Energy's Wind Program and the Renewable and Sustainable Energy Institute (RASEI) joined together to fund a high-tech study in April and May of 2011.

53

An improved wind speed algorithm for “Jason-1” altimeter under tropical cyclone conditions  

Science Journals Connector (OSTI)

Rain effect and lack of in situ validation data are two main causes of tropical cyclone wind retrieval errors. The National Oceanic and Atmospheric ... (NRCS); Hurricane Research Division (HRD) wind speed, which ...

Bangyong Qin; Xuan Zhou; Honglei Zhang; Xiaofeng Yang; Rong Lu…

2014-07-01T23:59:59.000Z

54

WPAN Based Preventive Condition Monitoring for Solar Wind Energy Converters in Rural Electrification  

Science Journals Connector (OSTI)

Though the fast depletion of conventional energy reserves motivating the generation and usage of nonconventional energy sources, the initial investment on wind energy converters and their high maintenance cost due to the height of the wind tower, down ... Keywords: non-conventional energy sources, wind energy converters, maintenance, IEEE 802.15.4 wireless technology

Rambabu A. Vatti; Arun N. Gaikwad

2013-09-01T23:59:59.000Z

55

Analysis of the Performance of a Wind-Turbine Airfoil under Heavy-Rain Conditions Using a Multiphase Computational Fluid Dynamics Approach  

Science Journals Connector (OSTI)

These studies show that analyzing the performance of the wind-turbine airfoil under heavy-rain conditions is critical in evaluating the turbine efficiency and overall economic justification of wind farms with respect to the other alternative energy sources. ... The development of the energy generating costs of wind turbines directly depends on the wind turbine output, which depends upon the characteristics of the turbine blades and their surface roughness. ...

Ming Cai; Emadoddin Abbasi; Hamid Arastoopour

2012-11-21T23:59:59.000Z

56

Brushless Doubly Fed Induction Generator Based Wind Turbine Drivetrain Under Grid Fault Conditions:.  

E-Print Network [OSTI]

??With growing interest in sustainable forms of energy, the wind industry is growing rapidly. The Doubly Fed Induction Generator is the most popular choice for… (more)

Shipurkar, U.

2014-01-01T23:59:59.000Z

57

Characterizing Inflow Conditions Across the Rotor Disk of a Utility-Scale Wind Turbine (Poster)  

SciTech Connect (OSTI)

Multi-megawatt utility-scale wind turbines operate in a turbulent, thermally-driven atmosphere where wind speed and air temperature vary with height. Turbines convert the wind's momentum into electrical power, and so changes in the atmosphere across the rotor disk influence the power produced by the turbine. To characterize the inflow into utility scale turbines at the National Wind Technology Center (NWTC) near Boulder, Colorado, NREL recently built two 135-meter inflow monitoring towers. This poster introduces the towers and the measurements that are made, showing some of the data obtained in the first few months of operation in 2011.

Clifton, A.; Lundquist, J. K.; Kelley, N.; Scott, G.; Jager, D.; Schreck, S.

2012-01-01T23:59:59.000Z

58

Three-dimensional multifluid simulations of ionospheric loss at Mars from nominal solar wind conditions  

E-Print Network [OSTI]

Three-dimensional multifluid simulations of ionospheric loss at Mars from nominal solar wind (2006), Three-dimensional multifluid simulations of ionospheric loss at Mars from nominal solar wind 2006; accepted 30 June 2006; published 21 September 2006. [1] Three-dimensional multifluid simulations

Harnett , Erika

59

A MODULAR SHM-SCHEME FOR ENGINEERING STRUCTURES UNDER CHANGING CONDITIONS: APPLICATION TO AN OFFSHORE WIND  

E-Print Network [OSTI]

TO AN OFFSHORE WIND TURBINE Moritz W. H¨ackell1, Raimund Rolfes1 1 Institute of Structural Analysis, Leibniz in common. A shift from fossil to renewable energy source is the logical con- sequence. (Offshore) wind of remote offshore plants and an ageing fleet of onshore structures raise the demand of structural health

Paris-Sud XI, Université de

60

Wind Power at Døldarheia : Employing a discourse analysis to a controversy over wind power in order to show how various actors claim to represent the interests of the environment.  

E-Print Network [OSTI]

??This thesis is based on a case study of a planned wind power park in Vindafjord municipality in western Norway. It seeks to understand how… (more)

Vestbø, Thomas

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Kenya from RisoeDTU Kenya from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Kenya. The KAMM/WAsP methodology uses a set of wind classes to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The results are a summary of the simulated wind climate, and ii. a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to estimate the wind resource potential in the country including the the spatial variability. This map covers regions where long term measurements are not available. In a sense this is the point of the

62

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Bangladesh from RisoeDTU Bangladesh from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Bangladesh. Version 2 is an updated version of the earlier release and includes an adjustment to Weibull A and k to bring the Atlas values into better agreement with observations. See supplemental information.The KAMM/WAsP methodology uses a set of wind classes to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The result is i. a wind resource map, a summary of the simulated wind climate, and ii. a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to

63

Empowering wind power; On social and institutional conditions affecting the performance of entrepreneurs in the wind power supply market in the Netherlands.  

E-Print Network [OSTI]

??This dissertation focuses on wind energy for electricity generation, analysing the evolution of the wind power supply market in the Netherlands. We analysed different kind… (more)

Agterbosch, S.

2006-01-01T23:59:59.000Z

64

Simulation Analysis on Temperature Field for Doubly Fed Wind Generator Used in High Altitude Condition  

Science Journals Connector (OSTI)

In this paper, a 1.5 MW doubly fed wind generator was taken as an example. Its three-dimensional heat transfer physical model and mathematical model were established based on giving basic assumptions. Meanwhil...

Ding Shuye; Ge Yunzhong; Lü Xiangping

2012-01-01T23:59:59.000Z

65

Simulation of time series of storms and weather windows based on wind conditions data  

Science Journals Connector (OSTI)

Stated is an approach to the simulation of time series of storms and weather ... on their frequency. Using the results of wind reanalysis for the Norwegian, Barents, and ... values. Based on the revealed regulari...

S. I. Mastryukov

2013-04-01T23:59:59.000Z

66

Under very extreme conditions a flood that threatens to overtop a dam may be combined with strong winds that generate waves in the reservoir.  

E-Print Network [OSTI]

Under very extreme conditions a flood that threatens to overtop a dam may be combined with strong winds that generate waves in the reservoir. Prolonged wave overtopping or a combination of wave the actions of wind generated waves and wave overtopping. The uneven elevations of the dam crest

Bowles, David S.

67

NREL: Awards and Honors - North Wind 100/20 Wind Turbine  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

North Wind 100/20 Wind Turbine North Wind 100/20 Wind Turbine Developers: Gerry Nix and Brian Smith, National Renewable Energy Laboratory; Johnathan Lynch, Clint Coleman, Garrett Bywaters, and Rob Roland, Norhtern Power Systems; Dr. David Bubenheim and Michael Flynn, NASA Ames Research Center; and John Rand, National Science Foundation. The North Wind 100/20 Wind Turbine is a state-of-the-art wind turbine that is ideal for extreme cold conditions perfect for remote locations that may be off-grid or local-grid. The numeric designations represent the North Wind's capacity, 100-kilowatts (which is enough energy for 25-50 homes), and 20-meter diameter blades. The size of the North Wind 100/20 is unique, fitting an important market niche between large and small turbines. Large turbines (400-kilowatts and

68

Offshore wind farms as productive sites or ecological traps for gadoid fishes? – Impact on growth, condition index and diet composition  

Science Journals Connector (OSTI)

Abstract With the construction of wind farms all across the North Sea, numerous artificial reefs are created. These windmill artificial reefs (WARs) harbour high abundances of fish species which can be attracted from elsewhere or can be the result of extra production induced by these wind farms. To resolve the attraction–production debate in suddenly altered ecosystems (cf. wind farms), the possible consequences of attraction should be assessed; thereby bearing in mind that ecological traps may arise. In this paper we investigated whether the wind farms in the Belgian part of the North Sea act as ecological traps for pouting and Atlantic cod. Length-at-age, condition and diet composition of fish present at the windmill artificial reefs was compared to local and regional sandy areas. Fish data from the period 2009–2012 were evaluated. Mainly I- and II-group Atlantic cod were present around the WARs; while the 0- and I-group dominated for pouting. For Atlantic cod, no differences in length were observed between sites, indicating that fitness was comparable at the \\{WARs\\} and in sandy areas. No significant differences in condition index were observed for pouting. At the WARs, they were slightly larger and stomach fullness was enhanced compared to the surrounding sandy areas. Also diet differed considerably among the sites. The outcome of the proxies indicate that fitness of pouting was slightly enhanced compared to the surrounding sandy areas. No evidence was obtained supporting the hypothesis that the \\{WARs\\} act as an ecological trap for Atlantic cod and pouting.

Jan T. Reubens; Sofie Vandendriessche; Annemie N. Zenner; Steven Degraer; Magda Vincx

2013-01-01T23:59:59.000Z

69

An Algorithm to Estimate Field Concentrations in the Wake of a Power Plant Complex under Nonsteady Meteorological Conditions from Wind-Tunnel Experiments  

Science Journals Connector (OSTI)

Highest concentrations of pollutant at ground level are often produced from surface sources with stable or unstable atmospheric conditions and near calm erratic winds. This paper describes a weighted data methodology developed to predict surface ...

K. M. Kothari; R. N. Meroney; R. J. B. Bouwmeester

1981-08-01T23:59:59.000Z

70

Flapping wing applied to wind generators  

Science Journals Connector (OSTI)

The new conditions at the international level for energy source distributions and the continuous increasing of energy consumption must lead to a new alternative resource with the condition of keeping the environment clean. This paper offers a new approach for a wind generator and is based on the theoretical aerodynamic model. This new model of wind generator helped me to test what influences would be if there will be a bird airfoil instead of a normal wind generator airfoil. The aim is to calculate the efficiency for the new model of wind generator. A representative direction for using the renewable energy is referred to the transformation of wind energy into electrical energy with the help of wind turbines; the development of such systems lead to new solutions based on high efficiency reduced costs and suitable to the implementation conditions.

Alexandra Colidiuc; Stelian Galetuse; Bogdan Suatean

2012-01-01T23:59:59.000Z

71

Numerical Wave Modeling in Conditions with Strong Currents: Dissipation, Refraction, and Relative Wind  

Science Journals Connector (OSTI)

Currents effects on waves have led to many developments in numerical wave modeling over the past two decades, from numerical choices to parameterizations. The performance of numerical models in conditions with strong currents is reviewed here, and ...

Fabrice Ardhuin; Aron Roland; Franck Dumas; Anne-Claire Bennis; Alexei Sentchev; Philippe Forget; Judith Wolf; Françoise Girard; Pedro Osuna; Michel Benoit

2012-12-01T23:59:59.000Z

72

American Wind Energy Association Wind Energy Finance and Investment Seminar  

Broader source: Energy.gov [DOE]

The American Wind Energy Association Wind Energy Finance and Investment Seminar will be attended by representatives in the financial sector, businesses, bankers, government and other nonprofit...

73

NIST Technical Note 1629 Fire Fighting Tactics Under Wind Driven Fire Conditions  

E-Print Network [OSTI]

(FEMA) Assistance to Firefighters Research and Development Grant Program and the United States Fire Administrator United States Fire Administration Glenn A. Gaines, Acting Assistant Administrator U.S. Department to differences in staffing, equipment, building stock, typical weather conditions, etc. There is uniformity

Bentz, Dale P.

74

Facility Representatives  

Broader source: Energy.gov (indexed) [DOE]

063-2011 063-2011 February 2011 Superseding DOE-STD-1063-2006 April 2006 DOE STANDARD FACILITY REPRESENTATIVES U.S. Department of Energy AREA MGMT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE DOE-STD-1063-2011 ii Available on the Department of Energy Technical Standards Program Web site at http://www.hss.doe.gov/nuclearsafety/ns/techstds/ DOE-STD-1063-2011 iii FOREWORD 1. This Department of Energy (DOE) standard is approved for use by all DOE/National Nuclear Security Administration (NNSA) Components. 2. The revision to this DOE standard was developed by a working group consisting of headquarters and field participants. Beneficial comments (recommendations,

75

Facility Representatives  

Broader source: Energy.gov (indexed) [DOE]

DOE-STD-1063-2006 April 2006 Superseding DOE-STD-1063-2000 March 2000 DOE STANDARD FACILITY REPRESENTATIVES U.S. Department of Energy AREA MGMT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE DOE-STD-1063-2006 ii Available on the Department of Energy Technical Standards Program web site at http://www.eh.doe.gov/techstds/ DOE-STD-1063-2006 iii FOREWORD 1. This Department of Energy standard is approved for use by all DOE Components. 2. The revision to this DOE standard was developed by a working group consisting of headquarters and field participants. Beneficial comments (recommendations, additions, deletions) and any pertinent data that may improve this document should

76

Large-eddy simulation of offshore wind farm  

Science Journals Connector (OSTI)

A hybrid numerical capability is developed for the simulation of offshore wind farms in which large-eddy simulation is performed for the wind turbulence and a potential flow based method is used for the simulation of the ocean wave field. The wind and wave simulations are dynamically coupled. The effect of wind turbines on the wind field is represented by an actuator disk model. This study focuses on the effect of wind-seas and the turbine motion is treated as negligibly small. A variety of fully-developed and fetch-limited wind-sea conditions and turbine spacings are considered in the study. Statistical analyses are performed for the simulation results with a focus on the mean wind profile kinetic energy budget in the wind field and the wind turbine power extraction rate. The results indicate that the waves have appreciable effect on the wind farm performance. The wind turbines obtain a higher wind power extraction rate under the fully developed wind-sea condition compared with that under the fetch-limited condition. This higher extraction rate is caused by the faster propagating waves and the lower sea-surface resistance on the wind when the wind-seas are fully developed. The wave-induced difference can be as high as 8% with the commonly used turbine spacing in commercial land-based wind farms s x = 7 (with s x being the ratio of streamwise turbine spacing to the turbine diameter). Such level of difference is noteworthy considering the previous understanding that direct wave-induced disturbance to the wind field decays exponentially away from wave surface.

2014-01-01T23:59:59.000Z

77

Surface Wind Direction Variability  

Science Journals Connector (OSTI)

Common large shifts of wind direction in the weak-wind nocturnal boundary layer are poorly understood and are not adequately captured by numerical models and statistical parameterizations. The current study examines 15 datasets representing a ...

Larry Mahrt

2011-01-01T23:59:59.000Z

78

Wind effects on a stretched membrane heliostat  

SciTech Connect (OSTI)

Wind effects on stretched membrane heliostat were investigated in a boundary layer wind tunnel. The membrane response was measured at stow and representative operational conditions. It was found that both at the stow and operational conditions the mean response was much higher than the rms response. At stow conditions the largest response occurred near the leading edge of the membrane, while the rms response was the largest at the membrane center point. For the operational conditions, the largest mean and rms responses were found at the membrane centerpoint. The membrane response was significantly reduced by the membrane focusing induced through the internal underpressure.

Bienkiewicz, B. (Colorado State Univ., Fort Collins, CO (United States). Dept. of Civil Engineering)

1993-08-01T23:59:59.000Z

79

On the absence of wind bow-shocks around OB-runaway stars: probing the physical conditions of the interstellar medium  

E-Print Network [OSTI]

High-resolution IRAS maps are used to search for the presence of stellar-wind bow-shocks around high-mass X-ray binaries (HMXBs). Their high space velocities, recently confirmed with Hipparcos observations, combined with their strong stellar winds should result in the formation of wind bow-shocks. Except for the already known bow-shock around Vela X-1 (Kaper et al. 1997), we do not find convincing evidence for a bow-shock around any of the other HMXBs. Also in the case of (supposedly single) OB-runaway stars, only a minority appears to be associated with a bow-shock (Van Buren et al. 1995). We investigate why wind bow-shocks are not detected for the majority of these OB-runaway systems: is this due to the IRAS sensitivity, the system's space velocity, the stellar-wind properties, or the height above the galactic plane? It turns out that none of these suggested causes can explain the low detection rate (~40%). We propose that the conditions of the interstellar medium mainly determine whether a wind bow-shock is formed or not. In hot, tenuous media (like inside galactic superbubbles) the sound speed is high (~100 km/s), such that many runaways move at subsonic velocity through a low-density medium, thus preventing the formation of an observable bow-shock. Superbubbles are expected (and observed) around OB associations, where the OB-runaway stars were once born. Turning the argument around, we use the absence (or presence) of wind bow-shocks around OB runaways to probe the physical conditions of the interstellar medium in the solar neighbourhood.

Fredrik Huthoff; Lex Kaper

2001-12-18T23:59:59.000Z

80

CT head-scan dosimetry in an anthropomorphic phantom and associated measurement of ACR accreditation-phantom imaging metrics under clinically representative scan conditions  

SciTech Connect (OSTI)

Purpose: To measure radiation absorbed dose and its distribution in an anthropomorphic head phantom under clinically representative scan conditions in three widely used computed tomography (CT) scanners, and to relate those dose values to metrics such as high-contrast resolution, noise, and contrast-to-noise ratio (CNR) in the American College of Radiology CT accreditation phantom.Methods: By inserting optically stimulated luminescence dosimeters (OSLDs) in the head of an anthropomorphic phantom specially developed for CT dosimetry (University of Florida, Gainesville), we measured dose with three commonly used scanners (GE Discovery CT750 HD, Siemens Definition, Philips Brilliance 64) at two different clinical sites (Walter Reed National Military Medical Center, National Institutes of Health). The scanners were set to operate with the same data-acquisition and image-reconstruction protocols as used clinically for typical head scans, respective of the practices of each facility for each scanner. We also analyzed images of the ACR CT accreditation phantom with the corresponding protocols. While the Siemens Definition and the Philips Brilliance protocols utilized only conventional, filtered back-projection (FBP) image-reconstruction methods, the GE Discovery also employed its particular version of an adaptive statistical iterative reconstruction (ASIR) algorithm that can be blended in desired proportions with the FBP algorithm. We did an objective image-metrics analysis evaluating the modulation transfer function (MTF), noise power spectrum (NPS), and CNR for images reconstructed with FBP. For images reconstructed with ASIR, we only analyzed the CNR, since MTF and NPS results are expected to depend on the object for iterative reconstruction algorithms.Results: The OSLD measurements showed that the Siemens Definition and the Philips Brilliance scanners (located at two different clinical facilities) yield average absorbed doses in tissue of 42.6 and 43.1 mGy, respectively. The GE Discovery delivers about the same amount of dose (43.7 mGy) when run under similar operating and image-reconstruction conditions, i.e., without tube current modulation and ASIR. The image-metrics analysis likewise showed that the MTF, NPS, and CNR associated with the reconstructed images are mutually comparable when the three scanners are run with similar settings, and differences can be attributed to different edge-enhancement properties of the applied reconstruction filters. Moreover, when the GE scanner was operated with the facility's scanner settings for routine head exams, which apply 50% ASIR and use only approximately half of the 100%-FBP dose, the CNR of the images showed no significant change. Even though the CNR alone is not sufficient to characterize the image quality and justify any dose reduction claims, it can be useful as a constancy test metric.Conclusions: This work presents a straightforward method to connect direct measurements of CT dose with objective image metrics such as high-contrast resolution, noise, and CNR. It demonstrates that OSLD measurements in an anthropomorphic head phantom allow a realistic and locally precise estimation of magnitude and spatial distribution of dose in tissue delivered during a typical CT head scan. Additional objective analysis of the images of the ACR accreditation phantom can be used to relate the measured doses to high contrast resolution, noise, and CNR.

Brunner, Claudia C.; Stern, Stanley H.; Chakrabarti, Kish [U.S. Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993 (United States)] [U.S. Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993 (United States); Minniti, Ronaldo [National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899 (United States)] [National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899 (United States); Parry, Marie I. [Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, Maryland 20889 (United States)] [Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, Maryland 20889 (United States); Skopec, Marlene [National Institutes of Health, 9000 Rockville Pike, Bethesda, Maryland 20892 (United States)] [National Institutes of Health, 9000 Rockville Pike, Bethesda, Maryland 20892 (United States)

2013-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

What is Distributed Wind?  

Broader source: Energy.gov (indexed) [DOE]

and refurbishers, including those from Canada, Mexico, Europe, China, and South Africa. In 2013, 30.4 MW of new distributed wind capacity was added, representing nearly...

82

Numerical Simulations of Island-Scale Airflow over Maui and the Maui Vortex under Summer Trade Wind Conditions  

Science Journals Connector (OSTI)

The fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5) coupled with the Noah land surface model (LSM) is employed to simulate island-scale airflow and circulations over Maui County, Hawaii, under summer trade wind ...

DaNa L. Carlis; Yi-Leng Chen; Vernon R. Morris

2010-07-01T23:59:59.000Z

83

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Ethiopia from RisoeDTU Ethiopia from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Ethiopia. The KAMM/WAsP methodology uses a set of wind classes to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The results are a summary of the simulated wind climate, and ii.a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to estimate the wind resource potential in the country including the spatial variability. This map covers regions where long term measurements are not available. In a sense this is the point of the mapping exercise, but it also means that verification of results has not been as complete would be ideal. There is some concern that the results may underestimate the resource. However, new measurement data is coming and revisions to the map may be made if necessary as verification is carried out.

84

Temporal structure of aggregate power fluctuations in large-eddy simulations of extended wind-farms  

E-Print Network [OSTI]

Fluctuations represent a major challenge for the incorporation of electric power from large wind-farms into power grids. Wind farm power output fluctuates strongly in time, over various time scales. Understanding these fluctuations, especially their spatio-temporal characteristics, is particularly important for the design of backup power systems that must be readily available in conjunction with wind-farms. In this work we analyze the power fluctuations associated with the wind-input variability at scales between minutes to several hours, using large eddy simulations (LES) of extended wind-parks, interacting with the atmospheric boundary layer. LES studies enable careful control of parameters and availability of wind-velocities simultaneously across the entire wind-farm. The present study focuses on neutral atmospheric conditions and flat terrain, using actuator-disk representations of the individual wind-turbines. We consider power from various aggregates of wind-turbines such as the total average power sign...

Stevens, Richard J A M

2014-01-01T23:59:59.000Z

85

The Response of Wind-Wave Spectra to Changing Winds. Part I: Increasing Winds  

Science Journals Connector (OSTI)

Continuous time series of wind profiles and wind waves under growing conditions, recorded at Shirahama Oceanographic Tower Station and discussed by Kawai, Okada and Toba, have been reanalysed for this study of the response of one-dimensional wind-...

Yoshiaki Toba; Kozo Okada; Ian S. F. Jones

1988-09-01T23:59:59.000Z

86

Investigation of Dynamic Aerodynamics and Control of Wind Turbine Sections Under Relevant Inflow/Blade Attitude Conditions  

SciTech Connect (OSTI)

The growth of wind turbines has led to highly variable loading on the blades. Coupled with the relative reduced stiffness of longer blades, the need to control loading on the blades has become important. One method of controlling loads and maximizing energy extraction is local control of the flow on the wind turbine blades. The goal of the present work was to better understand the sources of the unsteady loading and then to control them. This is accomplished through an experimental effort to characterize the unsteadiness and the effect of a Gurney flap on the flow, as well as an analytical effort to develop control approaches. It was planned to combine these two efforts to demonstrate control of a wind tunnel test model, but that final piece still remains to be accomplished.

Naughton, Jonathan W. [University of Wyoming

2014-08-05T23:59:59.000Z

87

Department Safety Representatives Department Safety Representative  

E-Print Network [OSTI]

Department Safety Representatives Overview Department Safety Representative Program/Operations Guidance Document The Department Safety Representative (DSR) serves a very important role with implementation of safety, health, and environmental programs on campus. The role of the DSR is to assist

Pawlowski, Wojtek

88

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Nepal from RisoeDTU Nepal from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Nepal. The KAMM/WAsP methodology uses a set of windclasses to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The results are a summary of the simulated wind climate, and a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to estimate the wind resource potential in the country including the the spatial variability. This map covers regions where long term measurements are not available. In a sense this is the point of the mapping exercise, but it also means that verification of results has not been as complete would be ideal. There is some concern that the results may underestimate the resource. However, new measurement data is coming and revisions to the map may be made if necessary as verification is carried out.

89

Wind/Wave Misalignment in the Loads Analysis of a Floating Offshore Wind Turbine: Preprint  

SciTech Connect (OSTI)

Wind resources far from the shore and in deeper seas have encouraged the offshore wind industry to look into floating platforms. The International Electrotechnical Commission (IEC) is developing a new technical specification for the design of floating offshore wind turbines that extends existing design standards for land-based and fixed-bottom offshore wind turbines. The work summarized in this paper supports the development of best practices and simulation requirements in the loads analysis of floating offshore wind turbines by examining the impact of wind/wave misalignment on the system loads under normal operation. Simulations of the OC3-Hywind floating offshore wind turbine system under a wide range of wind speeds, significant wave heights, peak-spectral periods and wind/wave misalignments have been carried out with the aero-servo-hydro-elastic tool FAST [4]. The extreme and fatigue loads have been calculated for all the simulations. The extreme and fatigue loading as a function of wind/wave misalignment have been represented as load roses and a directional binning sensitivity study has been carried out. This study focused on identifying the number and type of wind/wave misalignment simulations needed to accurately capture the extreme and fatigue loads of the system in all possible metocean conditions considered, and for a down-selected set identified as the generic US East Coast site. For this axisymmetric platform, perpendicular wind and waves play an important role in the support structure and including these cases in the design loads analysis can improve the estimation of extreme and fatigue loads. However, most structural locations see their highest extreme and fatigue loads with aligned wind and waves. These results are specific to the spar type platform, but it is expected that the results presented here will be similar to other floating platforms.

Barj, L.; Stewart, S.; Stewart, G.; Lackner, M.; Jonkman, J.; Robertson, A.

2014-02-01T23:59:59.000Z

90

LARGE SCALE WIND CLIMATOLOGICAL EXAMINATIONS OF WIND ENERGY UTILIZATION  

E-Print Network [OSTI]

The aim of this article is to describe the particular field of climatology which analyzes air movement characteristics regarding utilization of wind for energy generation. The article describes features of wind energy potential available in Hungary compared to wind conditions in other areas of the northern quarter sphere in order to assist the wind energy use development in Hungary. Information on wind climate gives a solid basis for financial and economic decisions of stakeholders in the field of wind energy utilization.

Andrea Kircsi

91

The Structure of the Solar Wind in the Inner Heliosphere  

E-Print Network [OSTI]

through the solar wind and produce extreme conditions thatspeed wind during the SC 22 period. Extreme-ultraviolet (

Lee, Christina On-Yee

2010-01-01T23:59:59.000Z

92

Wind energy  

Science Journals Connector (OSTI)

Wind energy is rapidly growing. In 2006 the installed generating capacity in the world increased by 25%, a growth rate which has more or less been sustained during the last decade. And there is no reason to believe that this growth will slow significantly in the coming years. For example, the United Kingdom's goal for installed wind turbines by 2020 is 33 GW up from 2 GW in 2006, an average annual growth rate of 22% over that period. More than half of all turbines are installed in Europe, but United States, India and lately China are also rapidly growing markets. The cradle of modern wind energy was set by innovative blacksmiths in rural Denmark. Now the wind provides more than 20% of the electrical power in Denmark, the industry has professionalized and has close ties with public research at universities. This focus issue is concerned with research in wind energy. The main purposes of research in wind energy are to: decrease the cost of power generated by the wind; increase the reliability and predictability of the energy source; investigate and reduce the adverse environmental impact of massive deployment of wind turbines; build research based educations for wind energy engineers. This focus issue contains contributions from several fields of research. Decreased costs cover a very wide range of activities from aerodynamics of the wind turbine blades, optimal site selection for the turbines, optimization of the electrical grid and power market for a fluctuating source, more efficient electrical generators and gears, and new materials and production techniques for turbine manufacturing. The United Kingdom recently started the construction of the London Array, a 1 GW off-shore wind farm east of London consisting of several hundred turbines. To design such a farm optimally it is necessary to understand the chaotic and very turbulent flow downwind from a turbine, which decreases the power production and increases the mechanical loads on other nearby turbines. Also addressed within the issue is how much conventional power production can be replaced by the ceaseless wind, with the question of how Greece's target of 29% renewables by 2020 is to be met efficiently. Other topics include an innovative way to determine the power curve of a turbine experimentally more accurately, the use of fluid dynamics tools to investigate the implications of placing vortex generators on wind turbine blades (thereby possibly improving their efficiency) and a study of the perception of wind turbine noise. It turns out that a small but significant fraction of wind turbine neighbours feel that turbine generated noise impairs their ability to rest. The annoyance is correlated with a negative attitude towards the visual impact on the landscape, but what is cause and effect is too early to say. As mentioned there is a rush for wind turbines in many countries. However, this positive development for the global climate is currently limited by practical barriers. One bottleneck is the difficulties for the sub-suppliers of gears and other parts to meet the demand. Another is the difficulties to meet the demand for engineers specialized in wind. For that reason the Technical University of Denmark (DTU) recently launched the world's first Wind Energy Masters Program. Here and elsewhere in the world of wind education and research we should really speed up now, as our chances of contributing to emission free energy production and a healthier global climate have never been better. Focus on Wind Energy Contents The articles below represent the first accepted contributions and further additions will appear in the near future. Wind turbines—low level noise sources interfering with restoration? Eja Pedersen and Kerstin Persson Waye On the effect of spatial dispersion of wind power plants on the wind energy capacity credit in Greece George Caralis, Yiannis Perivolaris, Konstantinos Rados and Arthouros Zervos Large-eddy simulation of spectral coherence in a wind turbine wake A Jimenez, A Crespo, E Migoya and J Garcia How to improve the estimation of

Jakob Mann; Jens Nørkær Sørensen; Poul-Erik Morthorst

2008-01-01T23:59:59.000Z

93

Facility Representative Program: 2000 Facility Representative Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

0 Facility Representative Workshop 0 Facility Representative Workshop May 16-18, 2000 Las Vegas, NV Facility Rep of the Year Award | Attendees list | Summary Report [PDF] WORKSHOP AGENDA Tuesday, May 16, 2000 Theme for Day 1: Sustaining the Success of the Facility Representative Program 8:00 a.m. - Opening Remarks - Joe Arango, Facility Representative Program Manager 8:05 a.m. - Welcome - Kenneth Powers, Deputy Manager Nevada Operations Office 8:15 a.m. - Deputy Secretary Remarks - T. J. Glauthier, Deputy Secretary of Energy 8:30 a.m. - Keynote Address - Jerry Lyle, Assistant Manager for Environmental Management, Idaho Operations Office 9:00 a.m. - Facility Representative of the Year Presentation - Mark B. Whitaker, Departmental Representative 9:30 a.m. - Break 9:50 a.m. - Program Results and Goals - Joe Arango, Facility Representative Program Manager

94

NREL: Wind Research - NREL Analyzes Floating Offshore Wind Technology...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NREL Analyzes Floating Offshore Wind Technology for Statoil November 6, 2014 NREL engineers traveled to Oslo, Norway, to meet with Statoil representatives regarding NREL's analysis...

95

Control of a DFIG-based wind energy conversion system operating under harmonically distorted unbalanced grid voltage along with nonsinusoidal rotor injection conditions  

Science Journals Connector (OSTI)

Abstract In this study, novel hybrid proportional-integral-harmonic resonant (PI-R) controllers implemented in the both (dq)+ and rotor (?r?r) reference frames are presented to control a doubly fed induction generator (DFIG)-based wind power generation system operating simultaneously under the three conditions which are nonsinusoidal rotor voltage injection, harmonically distorted grid voltage, and unbalanced grid voltage. The contribution of this work is to present a novel control scheme implemented in the both (dq)+ and rotor (?r?r) reference frames by considering all the three mentioned conditions (no one or two of them). It will be shown that the proposed control scheme keeps the DFIG in an acceptable operation margin and furthermore, it eliminates all harmonics and pulsations components from the stator and the rotor circuits when the DFIG operates under harmonically distorted unbalanced grid voltage along with quasi-sine rotor injection conditions. The proposed control scheme is simulated in MATLAB/Simulink and simulated results are presented to validate the theoretical results. Although this work is carried out under the three mentioned conditions and other related works have been reported under only one condition, comparison between the results of this work and other works is performed to prove the excellent performances of the proposed control scheme.

Hassan Fathabadi

2014-01-01T23:59:59.000Z

96

Wind speed equalization-based incoming wind classification by aggregating DFIGs  

Science Journals Connector (OSTI)

With the development of wind energy, it is necessary to develop equivalent models to represent dynamic behaviors of wind farms in power systems. The equivalent wind method is investigated for the aggregation o...

Zhaojun Meng; Feng Xue; Xueming Li

2013-06-01T23:59:59.000Z

97

Simulations of pulsar wind formation  

E-Print Network [OSTI]

We present initial results of the first self-consistent numerical model of the outer magnetosphere of a pulsar. By using the relativistic ``particle-in-cell'' method with special boundary conditions to represent plasma dynamics in 3D, we are able to follow magnetospheric plasma through the light cylinder into the wind zone for arbitrary magnetic inclination angles. For aligned rotators we confirm the ``disk-dome'' charge-separated structure of the magnetosphere and find that this configuration is unstable to a 3D nonaxisymmetric diocotron instability. This instability allows plasma to move across the field lines and approach the corotating Goldreich-Julian solution within several rotation periods. For oblique rotators formation of the spiral ``striped wind'' in the equatorial direction is demonstrated and the acceleration of the wind and its magnetization is discussed. We find that the wind properties vary with stellar latitude; however, whether injection conditions at the pulsar are responsible for the observed jet-equator geometry of Crab and Vela is currently under investigation. We also comment on the electrodynamics of the simulated magnetospheres, their current closure, and future simulations.

Anatoly Spitkovsky; Jonathan Arons

2002-01-22T23:59:59.000Z

98

A Performance Comparison of Condition Based Monitoring Damage Features Used in Rotating Machines under Variable Conditions /  

E-Print Network [OSTI]

Condition monitoring of wind turbines: Techniques andand fault detection of wind turbines and related algorithms:and fault diagnostics of wind turbines,” in Prognostics and

Robinson, Luke Thomas

2013-01-01T23:59:59.000Z

99

Facility Representative Program: 2010 Facility Representative Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

10 Facility Representative Workshop 10 Facility Representative Workshop May 12 - 13, 2010 Las Vegas, NV Facility Rep of the Year Award | Attendees | Summary Report Workshop Agenda and Presentations Day 1: Wednesday, May 12, 2010 8:00 a.m. Opening Remarks James Heffner, Facility Representative Program Manager Earl Hughes, Safety System Oversight Program Manager Office of Nuclear Safety Policy and Assistance Office of Health, Safety and Security 8:15 a.m. Welcome from the Nevada Site Office John Mallin, Deputy Assistant Manager for Site Operations Nevada Site Office 8:30 a.m. Workshop Keynote Address Todd Lapointe Chief of Nuclear Safety Central Technical Authority Staff 9:15 a.m. Facility Representative and Safety System Oversight Award Ceremony James Heffner, Facility Representative Program Manager

100

Facility Representative Program: 2007 Facility Representative Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7 Facility Representative Workshop 7 Facility Representative Workshop May 15 - 17, 2007 Las Vegas, NV Facility Rep of the Year Award | Attendees list | Summary Report [PDF] WORKSHOP AGENDA Final Day 1: Tuesday, May 15, 2007 8:00 a.m. Opening Remarks Joanne Lorence, Facility Representative Program Manager 8:15 a.m. Welcome from the Nevada Site Office Gerald Talbot, Manager, Nevada Site Office 8:30 a.m. Videotaped Remarks from the Deputy Secretary The Honorable Clay Sell, Deputy Secretary of Energy 8:45 a.m. Keynote Address - Safety Oversight Perspective and Expectations Glenn Podonsky, Chief Health, Safety and Security Officer, Office of Health, Safety and Security 9:10 a.m. Facility Representative of the Year Presentation Mark B. Whitaker, Jr., Departmental Representative to the Defense Nuclear Facilities Safety Board,

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Facility Representative Program: 2003 Facility Representative Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

3 Facility Representative Workshop 3 Facility Representative Workshop May 13 - 15, 2003 Las Vegas, NV Facility Rep of the Year Award | Attendees list | Summary Report [PDF] WORKSHOP AGENDA Day 1: Tuesday, May 13, 2003 Theme: Program Successes and Challenges 8:00 a.m. John Evans, Facility Representative Program Manager 8:15 a.m. Welcome Kathleen Carlson Manager, Nevada Site Office 8:30 a.m. Keynote Address Savannah River Site and Facility Reps - A Shared History and Common Future Jeffrey M. Allison Manager, Savannah River Operations Office 9:00 a.m. Videotaped Remarks from the Deputy Secretary Kyle E. McSlarrow, Deputy Secretary of Energy 9:10 a.m. Facility Representative of the Year Presentation Mark B. Whitaker, Jr., Departmental Representative to the Defense Nuclear Facilities Safety Board

102

Facility Representative Program: 2001 Facility Representative Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 Facility Representative Workshop 1 Facility Representative Workshop May 15 - 17, 2001 Las Vegas, NV Facility Rep of the Year Award | Attendees list | Summary Report [PDF] WORKSHOP AGENDA Day 1: Tuesday, May 15, 2001 Theme: Program Successes and Challenges 8:00 a.m. - Logistics Announcements & Opening Remarks - Joe Arango, Facility Representative Program Manager 8:15 a.m. - Welcome - Debbie Monette, Assistant Manager for National Security, Nevada Operations Office 8:30 a.m. - Keynote Address - Ralph Erickson, National Nuclear Security Administration 9:00 a.m.- DOE Facility Representative of the Year Presentation - Mark B. Whitaker, Jr., Departmental Representative to the Defense Nuclear Facilities Safety Board 9:30 a.m. - Break 9:50 a.m. - Program Summary - Joe Arango 10:10 a.m. - Management Panel/Questions and Answers

103

Facility Representative Program: Facility Representative Program Sponsors  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Facility Representative Program Sponsors Facility Representative Program Sponsors There are 29 Facility Representative Program Sponsors Office Name Title E-Mail Phone ASO Larry Pendexter ES&H Div Dir (Argonne) larry.pendexter@ch.doe.gov 630-252-1485 BHSO Bob Desmarais Operations Management Division Director desmarai@bnl.gov 631-344-5434 CBFO Glenn Gamlin Facility Representative Supervisor glenn.gamlin@wipp.ws 575-234-8136 CBFO Casey Gadbury Operations Manager casey.gadbury@wipp.ws 575-234-7372 FSO Mark Bollinger Deputy Manager Mark.Bollinger@ch.doe.gov 630-840-8130 FSO John Scott FR Team Lead john.scott@ch.doe.gov 630-840-2250 HS-30 James O'Brien Director, Office of Nuclear Safety James.O'Brien@hq.doe.gov 301-903-1408 HS-32 Earl Hughes Facility Representative Program Manager Earl.Hughes@hq.doe.gov 202-586-0065

104

Wind derivatives: hedging wind risk:.  

E-Print Network [OSTI]

??Wind derivatives are financial contracts that can be used to hedge or mitigate wind risk. In this thesis, the focus was on pricing these wind… (more)

Hoyer, S.A.

2013-01-01T23:59:59.000Z

105

Demand response computation for future smart grids incorporating wind power  

Science Journals Connector (OSTI)

In this paper, we study supply and demand management in the presence of conventional and renewable energy sources, where the latter is represented by a single wind turbine. Total social welfare, defined in terms of consumer utility and cost of power ... Keywords: constrained optimization, kuhn-tucker conditions, outage probability, renewable source, smart grid

Nihan Çiçek; Hakan Deliç

2013-03-01T23:59:59.000Z

106

Dependence of offshore wind turbine fatigue loads on atmospheric stratification  

Science Journals Connector (OSTI)

The stratification of the atmospheric boundary layer (ABL) is classified in terms of the M-O length and subsequently used to determine the relationship between ABL stability and the fatigue loads of a wind turbine located inside an offshore wind farm. Recorded equivalent fatigue loads, representing blade-bending and tower bottom bending, are combined with the operational statistics from the instrumented wind turbine as well as with meteorological statistics defining the inflow conditions. Only a part of all possible inflow conditions are covered through the approximately 8200 hours of combined measurements. The fatigue polar has been determined for an (almost) complete 360° inflow sector for both load sensors, representing mean wind speeds below and above rated wind speed, respectively, with the inflow conditions classified into three different stratification regimes: unstable, neutral and stable conditions. In general, impact of ABL stratification is clearly seen on wake affected inflow cases for both blade and tower fatigue loads. However, the character of this dependence varies significantly with the type of inflow conditions – e.g. single wake inflow or multiple wake inflow.

K S Hansen; G C Larsen; S Ott

2014-01-01T23:59:59.000Z

107

Facility Representative Program: 2004 Facility Representative Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 Facility Representative Workshop 4 Facility Representative Workshop May 18 - 20, 2004 Las Vegas, NV Facility Rep of the Year Award | Attendees list | Summary Report [PDF] WORKSHOP AGENDA Final Day 1: Tuesday, May 18, 2004 Theme: Program Successes and Challenges 8:00 a.m. Opening Remarks John Evans, Facility Representative Program Manager 8:15 a.m. Welcome Kathy Carlson, Nevada Site Office Manager 8:30 a.m. Videotaped Remarks from the Deputy Secretary Kyle E. McSlarrow, Deputy Secretary of Energy Deputy Secretary's Remarks 8:40 a.m. Keynote Address - NNSA Evaluation of Columbia Accident Investigation Board Report Brigadier General Ronald J. Haeckel, Principal Assistant Deputy Administrator for Military Applications, NNSA Other Information: NASAÂ’S Columbia Accident Investigation Board Report

108

Facility Representative Program: 2006 Facility Representative Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

6 Facility Representative Workshop 6 Facility Representative Workshop May 16 - 19, 2006 Knoxville, Tennessee Facility Rep of the Year Award | Attendees list | Summary Report [PDF] WORKSHOP AGENDA Final To view Pictures, scroll the mouse over the Picture icon To view Presentations, Picture Slideshows and Video, click on the icon Day 1: Tuesday, May 16, 2006 8:00 a.m. Opening Remarks John Evans, Facility Representative Program Manager 8:15 a.m. Welcome from Oak Ridge Office Gerald Boyd, Manager, Oak Ridge Office 8:25 a.m. Welcome from Y-12 Site Office Theodore Sherry, Manager, Y-12 Site Office 8:35 a.m. Videotaped Remarks from the Deputy Secretary The Honorable Clay Sell, Deputy Secretary of Energy 8:40 a.m. Keynote Address - Safety Oversight at Environmental Management Activities Dr. Inés Triay, Chief Operating Officer, Office of Environmental Management

109

Greenhouse gas emissions from electricity generated by offshore wind farms  

Science Journals Connector (OSTI)

Abstract For wind power generation offshore sites offer significantly better wind conditions compared to onshore. At the same time, the demand for raw materials and therefore the related environmental impacts increase due to technically more demanding wind energy converters and additional components (e.g. substructure) for the balance of plant. Additionally, due to environmental concerns offshore wind farms will be sited farshore (i.e. in deep water) in the future having a significant impact on the operation and maintenance efforts (O&M). Against this background the goal of this analysis is an assessment of the specific GHG (greenhouse gas) emissions as a function of the site conditions, the wind mill technology and the O&M necessities. Therefore, a representative offshore wind farm is defined and subjected to a detailed LCA (life cycle assessment). Based on parameter variations and modifications within the technical and logistical system, promising configurations regarding GHG emissions are determined for different site conditions. Results show, that all parameters related to the energy yield have a distinctive impact on the specific GHG emissions, whereas the distance to shore and the water depth affect the results marginally. By utilizing the given improvement potentials GHG emissions of electricity from offshore wind farms are comparable to those achieved onshore.

Britta Reimers; Burcu Özdirik; Martin Kaltschmitt

2014-01-01T23:59:59.000Z

110

Sawtooth substorms generated under conditions of the steadily high solar wind energy input into the magnetosphere: Relationship between PC, AL and ASYM indices  

Science Journals Connector (OSTI)

Periodicity in occurrence of magnetic disturbances in polar cap and auroral zone under conditions of steady and powerful solar wind influence on the magnetosphere is analyzed on the example of 9 storm events with distinctly expressed sawtooth substorms (N = 48). Relationships between the polar cap magnetic activity (PC-index), magnetic disturbances in the auroral zone (AL-index) and value of the ring current asymmetry (ASYM index) were examined within the intervals of the PC growth phase and the PC decline phase inherent to each substorm. It is shown that the substorm sudden onsets are always preceded by the PC growth and that the substorm development does not affect the PC growth rate. On achieving the disturbance maximum, the PC and AL indices are simultaneously fall down to the level preceding the substorm, so that the higher the substorm intensity, the larger is the AL and PC drop in the decline phase. The ASYM index increases and decreases in conformity with the PC and AL behavior, the correlation between ASYM and PC being better than between ASYM and AL. Level of the solar wind energy input into the magnetosphere determines periodicity and intensity of disturbances: the higher the coupling function EKL, the higher is substorm intensity and shorter is substorm length. Taking into account the permanently high level of auroral activity and inconsistency of aurora behavior and magnetic onsets during sawtooth substorms, the conclusion is made that auroral ionosphere conductivity is typically high and ensures an extremely high intensity of field-aligned currents in R1 FAC system. The periodicity of sawtooth substorms is determined by recurrent depletions and restorations of R1 currents, which are responsible for coordinated variations of magnetic activity in the polar cap and auroral zone.

O. Troshichev; D. Sormakov; A. Janzhura

2012-01-01T23:59:59.000Z

111

Wind Easements | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Wind Easements Wind Easements Wind Easements < Back Eligibility Agricultural Fed. Government Institutional Local Government Nonprofit Residential Schools State Government Tribal Government Savings Category Wind Buying & Making Electricity Program Info State North Dakota Program Type Solar/Wind Access Policy North Dakota allows property owners to grant an easement that ensures adequate exposure of a wind-energy system to the wind. The easement runs with the land benefited and burdened, and terminates upon the conditions stated in the easement. The statutes authorizing the creation of wind easements include several provisions to protect property owners. For example, a wind easement may not make the property owner liable for any property tax associated with the wind-energy system or other equipment

112

WIND ENERGY Wind Energ. (2014)  

E-Print Network [OSTI]

WIND ENERGY Wind Energ. (2014) Published online in Wiley Online Library (wileyonlinelibrary Correspondence M. Wächter, ForWind-Center for Wind Energy Research, Institute of Physics, Carl Von Ossietzky on the operation of wind energy converters (WECs) imposing different risks especially in terms of highly dynamic

Peinke, Joachim

113

wind energy  

National Nuclear Security Administration (NNSA)

5%2A en Pantex to Become Wind Energy Research Center http:nnsa.energy.govfieldofficesnponpopressreleasespantex-become-wind-energy-research-center

114

New England Wind Forum: Wind Power Policy in New England  

Wind Powering America (EERE)

Projects in New England Building Wind Energy in New England Wind Resource Wind Power Technology Economics Markets Siting Policy Renewable Energy Portfolio Standards State Renewable Energy Funds Federal Tax Incentives and Grants Net Metering and Interconnection Standards Pollutant Emission Reduction Policies Awareness Technical Challenges Issues Small Wind Large Wind Newsletter Perspectives Events Quick Links to States CT MA ME NH RI VT Bookmark and Share Wind Power Policy in New England Why Incentives and Policy? Federal and state policies play an important role in encouraging wind energy development by leveling the playing field compared to other energy sources. Many of the substantial benefits of wind power as a domestic, zero-emission part of the energy portfolio - sustainability, displacement of pollutant emissions from other power sources, fuel diversity, price stabilization, keeping a substantial portion of energy expenditures in the local economy - are shared by society as a whole and cannot be readily captured by wind generators directly in the price they charge for their output. In addition, while wind power receives some policy support, the level of federal incentives for wind represents less than 1% of the subsidies and tax breaks given to the fossil fuels and nuclear industries (source: "Wind Power An Increasingly Competitive Source of New Generation." Wind Energy Weekly #1130.).

115

Vertical axis wind turbine acoustics  

E-Print Network [OSTI]

Vertical Axis Wind Turbine Acoustics Charlie Pearson Corpus Christi College Cambridge University Engineering Department A thesis submitted for the degree of Doctor of Philosophy September 2013 Declaration Described in this dissertation is work... quickly to changing wind conditions, small- scale vertical axis wind turbines (VAWTs) have been proposed as an efficient solution for deployment in built up areas, where the wind is more gusty in nature. If VAWTs are erected in built up areas...

Pearson, Charlie

2014-04-08T23:59:59.000Z

116

Wind energy systems information user study  

SciTech Connect (OSTI)

This report describes the results of a series of telephone interviews with potential users of information on wind energy conversion. These interviews, part of a larger study covering nine different solar technologies, attempted to identify: the type of information each distinctive group of information users needed, and the best way of getting information to that group. Groups studied include: wind energy conversion system researchers; wind energy conversion system manufacturer representatives; wind energy conversion system distributors; wind turbine engineers; utility representatives; educators; county agents and extension service agents; and wind turbine owners.

Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

1981-01-01T23:59:59.000Z

117

Wind Energy  

Broader source: Energy.gov (indexed) [DOE]

FUPWG Meeting FUPWG Meeting NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC Robi Robichaud November 18, 2009 Topics Introduction Review of the Current Wind Market Drivers for Wind Development Siting g Issues Wind Resource Assessment Wind Characteristics Wind Power Potential Basic Wind Turbine Theory Basic Wind Turbine Theory Types of Wind Turbines Facts About Wind Siting Facts About Wind Siting Wind Performance 1. United States: MW 1 9 8 2 1 9 8 3 1 9 8 4 1 9 8 5 1 9 8 6 1 9 8 7 1 9 8 8 1 9 8 9 1 9 9 0 1 9 9 1 1 9 9 2 1 9 9 3 1 9 9 4 1 9 9 5 1 9 9 6 1 9 9 7 1 9 9 8 1 9 9 9 2 0 0 0 2 0 0 1 2 0 0 2 2 0 0 3 2 0 0 4 2 0 0 5 2 0 0 6 2 0 0 7 2 0 0 8 Current Status of the Wind Industry Total Global Installed Wind Capacity Total Global Installed Wind Capacity Total Global Installed Wind Capacity

118

NREL: Wind Research - News Release Archives  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 November 6, 2014 NREL Analyzes Floating Offshore Wind Technology for Statoil NREL engineers traveled to Oslo, Norway, to meet with Statoil representatives regarding NREL's...

119

Sandia National Laboratories: Wind Generator Modeling  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

& Events, Renewable Energy, SMART Grid, Systems Analysis, Transmission Grid Integration, Wind Energy This modular block diagram represents the major components of the generic...

120

Measured effect of wind generation on the fuel consumption of an isolated diesel power system  

SciTech Connect (OSTI)

The Block Island Power Company (BIPCO), on Block Island, Rhode Island, operates an isolated electric power system consisting of diesel generation and an experimental wind turbine. The 150-kW wind turbine, designated MOD-OA by the U.S. Department of Energy is typically operated in parallel with two diesel generators to serve an average winter load of 350 kW. Wind generation serves up to 60% of the system demand depending on wind speed and total system load. Results of diesel fuel consumption measurements are given for the diesel units operated in parallel with the wind turbine and again without the wind turbine. The fuel consumption data are used to calculate the amount of fuel displaced by wind energy. Results indicate that the wind turbine displaced 25,700 lbs. of the diesel fuel during the test period, representing a calculated reduction in fuel consumption of 6.7% while generating 11% of the total electrical energy. The amount of displaced fuel depends on operating conditions and system load. It is also shown that diesel engine throttle activity resulting from wind gusts which rapidly change the wind turbine output do not significantly influence fuel consumption.

Stiller, P.; Scott, G.; Shaltens, R.

1983-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Site insolation and wind power characteristics: technical report Midwest region  

SciTech Connect (OSTI)

This phase of the Site Insolation and Wind Power Characteristics Study was performed to provide statistical information on the expected future availability of solar and wind power at various sites in the Midwest Region of the US Historic data (SOLMET), at 22 National Weather Service stations with hourly solar insolation and collateral meteorological information, were interrogated to provide an estimate of future trends. Solar data are global radiation incident on a horizontal surface, and wind data represent wind power normal to the air flow. Selected insolation and wind power conditions were investigated for their occurrence and persistence, for defined periods of time, on a monthly basis. Global horizontal insolation is related to inclined surfaces at each site. Ratios are provided, monthly, for multiplying global insolation to obtain insolation estimates on south-facing surfaces inclined at different angles with respect to the horizontal. Also, joint probability distribution tables are constructed showing the number of occurrences, out of a finite sample size, of daily average solar and wind power within selected intervals, by month. Information of this nature is intended as an aid to preliminary planning activities for the design and operation of solar and wind energy utilization and conversion systems.

None

1980-08-01T23:59:59.000Z

122

Optimization Online - Stochastic Real-Time Scheduling of Wind ...  

E-Print Network [OSTI]

Jan 3, 2015 ... Stochastic Real-Time Scheduling of Wind-thermal Generation Units in ... Keywords: conditional value at risk, uncertainty modeling, wind energy.

Alireza Soroudi

2015-01-03T23:59:59.000Z

123

WRF wind simulation and wind energy production estimates forced by different reanalyses: Comparison with observed data for Portugal  

Science Journals Connector (OSTI)

Abstract The performance of the WRF mesoscale model in the wind simulation and wind energy estimates was assessed and evaluated under different initial and boundary forcing conditions. Due to the continuous evolution and progress in the development of reanalyses datasets, this work aims to compare an older, yet widely used, reanalysis (the NCEP-R2) with three recently released reanalyses datasets that represent the new generation of this type of data (ERA-Interim, NASA-MERRA and NCEP-CFSR). Due to its intensive use in wind energy assessment studies, the NCEP-GFS and NCEP-FNL analysis were also used to drive WRF and its results compared to those of the simulations driven by reanalyses. Six different WRF simulations were conducted and their results compared to measured wind data collected at thirteen wind measuring stations located in Portugal in areas of high wind energy potential. Based on the analysis and results presented in this work, it can be concluded that the new generation reanalyses are able to provide a considerable improvement in wind simulation when compared to the older reanalyses. Among all the initial and boundary conditions datasets tested here, ERA-Interim reanalysis is the one that likely provides the most realistic initial and boundary data, providing the best estimates of the local wind regimes and potential wind energy production. The NCEP-GFS and NCEP-FNL analyses seem to be the best alternatives to ERA-Interim, showing better results than all the other reanalyses datasets here tested, and can therefore be considered as valid alternatives to ERA-Interim, in particular for cases where reliable forcing data is needed for real-time applications due to its fast availability.

D. Carvalho; A. Rocha; M. Gómez-Gesteira; C. Silva Santos

2014-01-01T23:59:59.000Z

124

Wind Mills  

Science Journals Connector (OSTI)

Over 5,000 years ago, the ancient Egyptians used wind to sail ships on the Nile River. While the proliferation of water mills was in full swing, windmills appeared to harness more inanimate energy by employing wind

J. S. Rao

2011-01-01T23:59:59.000Z

125

Wind Farm  

Office of Energy Efficiency and Renewable Energy (EERE)

The wind farm in Greensburg, Kansas, was completed in spring 2010, and consists of ten 1.25 megawatt (MW) wind turbines that supply enough electricity to power every house, business, and municipal...

126

Wind Power  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Power As the accompanying map of New Mexico shows, the best wind power generation potential near WIPP is along the Delaware Mountain ridge line of the southern Guadalupe...

127

Wind Power  

Science Journals Connector (OSTI)

For off-shore wind energy, it is not economically profitable to locate wind turbines in waters with depths larger than about 40 m. For this reason, some floating turbine prototypes are being tested, which can be ...

Ricardo Guerrero-Lemus; José Manuel Martínez-Duart

2013-01-01T23:59:59.000Z

128

Site insolation and wind power characteristics, technical report northeast region. Vol. 2  

SciTech Connect (OSTI)

This phase of the Site Insolation and Wind Power Characteristics Study was performed to provide statistical information on the expected future availability of solar and wind power at various sites in the Northeast Region of the US Historic data (SOLMET), at 8 National Weather Service stations with hourly solar insolation and collateral meteorological information, were interrogated to provide an estimate of future trends. Solar data are global radiation incident on a horizontal surface, and wind data represent wind power normal to the air flow. Selected insolation and wind power conditions were investigated for their occurrence and persistence, for defined periods of time, on a monthly basis. Global horizontal insolation are related to inclined surfaces at each site. Ratios are provided, monthly, for multiplying global insolation to obtain insolation estimates on south-facing surfaces inclined at different angles with respect to the horizontal.

None

1980-08-01T23:59:59.000Z

129

Wind energy  

Science Journals Connector (OSTI)

...is approximately 4.5-6.01 for onshore wind farms. The price for offshore wind farms is estimated to be 50% higher. For comparison...visually intrusive. The visual impact of offshore wind farms quickly diminishes with distance and 10km...

2007-01-01T23:59:59.000Z

130

‘Chinook winds.’  

Science Journals Connector (OSTI)

...of south-easterly winds, which blow over the...Ocean, from which the winds come, can at this season...freezing-point. The wind well known in the Alps as the foehn is another example of...result is complicated by local details; regions of...

George M. Dawson

1886-01-08T23:59:59.000Z

131

Facility Representative Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Facility Representative Facility Representative Office of Nuclear Safety Home Facility Representative Home Annual Facility Rep Workshop › 2012 › 2011 › 2010 › 2009 › 2008 › 2007 › 2006 › 2005 › 2004 › 2003 › 2002 › 2001 › 2000 DOE Safety Links › ORPS Info › Operating Experience › DOE Lessons Learned › Accident Investigation Assessment Tools › FR CRADs › Surveillance Guides › Manager's Guide for Safety and Health Subject Matter Links General Program Information › Program Mission Statement › Program Directives and Guidance › FR of the Year Award Program › FR of the Year Award › FR Program Assessment Guide (Appendix B, DOE STD 1063-2011) FR Quarterly Performance Indicators Training & Qualification Information › Qualification Standards › Energy Online Courses

132

MAGNETOHYDRODYNAMIC SIMULATIONS OF THE SOLAR CORONA AND SOLAR WIND USING A BOUNDARY TREATMENT TO LIMIT SOLAR WIND MASS FLUX  

E-Print Network [OSTI]

MAGNETOHYDRODYNAMIC SIMULATIONS OF THE SOLAR CORONA AND SOLAR WIND USING A BOUNDARY TREATMENT ABSTRACT Magnetohydrodynamic simulations of the solar corona and solar wind are sensitive to conditions -- MHD -- solar wind -- Sun: corona 1. INTRODUCTION Time-dependent multidimensional MHD simulation

California at Berkeley, University of

133

Global potential for wind-generated electricity  

Science Journals Connector (OSTI)

...individual wind farm involves...individual turbines, costs for...operations and maintenance (O&M...downtime for maintenance accounts...installed turbines reflecting the fact that maintenance is normally...relatively low wind conditions...

Xi Lu; Michael B. McElroy; Juha Kiviluoma

2009-01-01T23:59:59.000Z

134

The Aerodynamics and Near Wake of an Offshore Floating Horizontal Axis Wind Turbine.  

E-Print Network [OSTI]

??Offshore floating wind turbines represent the future of wind energy. However, significant challenges must be overcome before these systems can be widely used. Because of… (more)

Sebastian, Thomas

2012-01-01T23:59:59.000Z

135

Numeric-modeling sensitivity analysis of the performance of wind turbine arrays  

SciTech Connect (OSTI)

An evaluation of the numerical model created by Lissaman for predicting the performance of wind turbine arrays has been made. Model predictions of the wake parameters have been compared with both full-scale and wind tunnel measurements. Only limited, full-scale data were available, while wind tunnel studies showed difficulties in representing real meteorological conditions. Nevertheless, several modifications and additions have been made to the model using both theoretical and empirical techniques and the new model shows good correlation with experiment. The larger wake growth rate and shorter near wake length predicted by the new model lead to reduced interference effects on downstream turbines and hence greater array efficiencies. The array model has also been re-examined and now incorporates the ability to show the effects of real meteorological conditions such as variations in wind speed and unsteady winds. The resulting computer code has been run to show the sensitivity of array performance to meteorological, machine, and array parameters. Ambient turbulence and windwise spacing are shown to dominate, while hub height ratio is seen to be relatively unimportant. Finally, a detailed analysis of the Goodnoe Hills wind farm in Washington has been made to show how power output can be expected to vary with ambient turbulence, wind speed, and wind direction.

Lissaman, P.B.S.; Gyatt, G.W.; Zalay, A.D.

1982-06-01T23:59:59.000Z

136

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES  

E-Print Network [OSTI]

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND for conditions important for offshore wind energy utilisation are compared and tested: Four models tested with data from the offshore field measurement Rødsand by extrapolating the measured 10 m wind

Heinemann, Detlev

137

Wind Blog  

Broader source: Energy.gov (indexed) [DOE]

wind-blog Office of Energy Efficiency & Renewable wind-blog Office of Energy Efficiency & Renewable Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585 en Two Facilities, One Goal: Advancing America's Wind Industry http://energy.gov/eere/articles/two-facilities-one-goal-advancing-america-s-wind-industry wind-industry" class="title-link">Two Facilities, One Goal: Advancing America's Wind Industry

138

Satellite Photograph Presents First Comprehensive View of Local Wind: The Santa Ana  

Science Journals Connector (OSTI)

...January 1973 Santa Ana wind condition reveals local atmospheric dynamics...imagery. The Santa Ana wind implies very specific...conservationists. A Santa Ana (a foehn type wind) may develop...Comprehensive View of Local Wind: The Santa Ana Abstract...

Leonard W. Bowden; Jates R. Huning; Charles F. Hutchinson; Claude W. Johnson

1974-06-07T23:59:59.000Z

139

Probabilistic fatigue methodology and wind turbine reliability  

SciTech Connect (OSTI)

Wind turbines subjected to highly irregular loadings due to wind, gravity, and gyroscopic effects are especially vulnerable to fatigue damage. The objective of this study is to develop and illustrate methods for the probabilistic analysis and design of fatigue-sensitive wind turbine components. A computer program (CYCLES) that estimates fatigue reliability of structural and mechanical components has been developed. A FORM/SORM analysis is used to compute failure probabilities and importance factors of the random variables. The limit state equation includes uncertainty in environmental loading, gross structural response, and local fatigue properties. Several techniques are shown to better study fatigue loads data. Common one-parameter models, such as the Rayleigh and exponential models are shown to produce dramatically different estimates of load distributions and fatigue damage. Improved fits may be achieved with the two-parameter Weibull model. High b values require better modeling of relatively large stress ranges; this is effectively done by matching at least two moments (Weibull) and better by matching still higher moments. For this purpose, a new, four-moment {open_quotes}generalized Weibull{close_quotes} model is introduced. Load and resistance factor design (LRFD) methodology for design against fatigue is proposed and demonstrated using data from two horizontal-axis wind turbines. To estimate fatigue damage, wind turbine blade loads have been represented by their first three statistical moments across a range of wind conditions. Based on the moments {mu}{sub 1}{hor_ellipsis}{mu}{sub 3}, new {open_quotes}quadratic Weibull{close_quotes} load distribution models are introduced. The fatigue reliability is found to be notably affected by the choice of load distribution model.

Lange, C.H. [Stanford Univ., CA (United States)

1996-05-01T23:59:59.000Z

140

A COOLING SYSTEM FOR BUIDINGS USING WIND ENERGY  

E-Print Network [OSTI]

A COOLING SYSTEM FOR BUIDINGS USING WIND ENERGY Hamid Daiyan Islamic Azad University - Semnan in dray land, and only uses wind energy for conditioning. It technologies date back over 1000 years. Wind system, Wind energy, Temperature Fig.1 Wind tower of Doulat-Abad garden of Yazd with it's altitude is 33

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

NREL: Wind Research - New Modularization Framework Transforms FAST Wind  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

New Modularization Framework Transforms FAST Wind Turbine Modeling Tool New Modularization Framework Transforms FAST Wind Turbine Modeling Tool January 3, 2014 The old and new versions of the FAST wind turbine modeling tool are represented in this illustration by boxes. The earlier version of FAST is represented by three boxes aligned in a column on the left side of the illustration. They contain the words AeroDyn, FAST, and Hydrodyn and represent the three modules that worked together to model aerodynamics, hydrodynamics and servo-elastics. Double ended arrows between the boxes indicate interaction between these modules. A large red arrow pointed from the three boxes to a large rectangle in the middle shows how this earlier software evolved into the new FAST Framework. The large rectangular box in the middle contains the words FAST Driver. Seven smaller boxes to the right of the FAST driver represent the new modules that feed into the driver.

142

Glossary Balancing Item: Represents  

Gasoline and Diesel Fuel Update (EIA)

Balancing Balancing Item: Represents differences between the sum of the components of natural gas supply and the sum of the components of natural gas disposition. These differences may be due to quantities lost or to the effects of data-report- ing problems. Reporting problems include differences due to the net result of conversions of flow data metered at varying temperature and pressure bases and converted to a standard temperature and pressure base; the effect of vari- ations in company accounting and billing practices; differ- ences between billing cycle and calendar period time frames; and imbalances resulting from the merger of data- reporting systems that vary in scope, format, definitions, and type of respondents. Biomass Gas: A medium Btu gas containing methane and carbon dioxide, resulting from the action of microorganisms on organic materials such as a landfill. British Thermal

143

Influence of wind characteristics on turbine performance Ioannis Antoniou (1)  

E-Print Network [OSTI]

(2) , Peder Enevoldsen (2) , Leo Thesbjerg (3) (1): Wind Energy Department, Risø of measuring the power curve is by using the wind speed at hub height. The assumption behind this is that the wind speed is representative of the wind over the whole turbine rotor. While this assumption

144

Wind Power Forecasting  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Retrospective Reports 2011 Smart Grid Wind Integration Wind Integration Initiatives Wind Power Forecasting Wind Projects Email List Self Supplied Balancing Reserves Dynamic...

145

Numerical Simulation of the Irish Wind Climate and Comparison with Wind  

Open Energy Info (EERE)

Numerical Simulation of the Irish Wind Climate and Comparison with Wind Numerical Simulation of the Irish Wind Climate and Comparison with Wind Atlas Data Dataset Summary Description (Abstract): The wind climate of Ireland has been calculated using the Karlsruhe Atmospheric Mesoscale Model KAMM using the statistical-dynamical method. The large-scale climatology is represented by 65 classes of geostropic wind. From the frequency of the classes and the simulations the climatology of the surface wind is determined. The simulated winds are processed similar to observed data to obtain LIB-files for the Wind Atlas Analysis and Application Program WAsP. Comparisons are made with mast observations which have been analyzed by WAsP. Sites with high wind power potential are well predicted. Stations with low power are over predicted. (Purpose): Article describing an example of a KAMM

146

Wind turbine  

SciTech Connect (OSTI)

The improvement in a wind turbine comprises providing a tower with a freely liftable mount and adapting a nacelle which is fitted with a propeller windwheel consisting of a plurality of rotor blades and provided therein with means for conversion of wind energy to be shifted onto said mount attached to the tower. In case of a violent wind storm, the nacelle can be lowered down to the ground to protect the rotor blades from breakage due to the force of the wind. Required maintenance and inspection of the nacelle and replacement of rotor blades can be safely carried out on the ground.

Abe, M.

1982-01-19T23:59:59.000Z

147

On representing chemical environments  

Science Journals Connector (OSTI)

We review some recently published methods to represent atomic neighborhood environments, and analyze their relative merits in terms of their faithfulness and suitability for fitting potential energy surfaces. The crucial properties that such representations (sometimes called descriptors) must have are differentiability with respect to moving the atoms and invariance to the basic symmetries of physics: rotation, reflection, translation, and permutation of atoms of the same species. We demonstrate that certain widely used descriptors that initially look quite different are specific cases of a general approach, in which a finite set of basis functions with increasing angular wave numbers are used to expand the atomic neighborhood density function. Using the example system of small clusters, we quantitatively show that this expansion needs to be carried to higher and higher wave numbers as the number of neighbors increases in order to obtain a faithful representation, and that variants of the descriptors converge at very different rates. We also propose an altogether different approach, called Smooth Overlap of Atomic Positions, that sidesteps these difficulties by directly defining the similarity between any two neighborhood environments, and show that it is still closely connected to the invariant descriptors. We test the performance of the various representations by fitting models to the potential energy surface of small silicon clusters and the bulk crystal.

Albert P. Bartók; Risi Kondor; Gábor Csányi

2013-05-28T23:59:59.000Z

148

Wind Powering America: Wind Events  

Wind Powering America (EERE)

calendar.asp Lists upcoming wind calendar.asp Lists upcoming wind power-related events. en-us julie.jones@nrel.gov (Julie Jones) http://www.windpoweringamerica.gov/images/wpa_logo_sm.jpg Wind Powering America: Wind Events http://www.windpoweringamerica.gov/calendar.asp Pennsylvania Wind for Schools Educator Workshop https://www.regonline.com/builder/site/Default.aspx?EventID=1352684 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4068 Wed, 4 Dec 2013 00:00:00 MST 2014 Joint Action Workshop http://www.windpoweringamerica.gov/filter_detail.asp?itemid=3996 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=3996 Mon, 21 Oct 2013 00:00:00 MST AWEA Wind Project Operations and Maintenance and Safety Seminar http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4009 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4009 Mon, 21

149

New England Wind Energy Education Project (NEWEEP)  

SciTech Connect (OSTI)

Project objective is to develop and disseminate accurate, objective information on critical wind energy issues impacting market acceptance of hundreds of land-based projects and vast off-shore wind developments proposed in the 6-state New England region, thereby accelerating the pace of wind installation from today's 140 MW towards the region's 20% by 2030 goals of 12,500 MW. Methodology: This objective will be accomplished by accumulating, developing, assembling timely, accurate, objective and detailed information representing the 'state of the knowledge' on critical wind energy issues impacting market acceptance, and widely disseminating such information. The target audience includes state agencies and local governments; utilities and grid operators; wind developers; agricultural and environmental groups and other NGOs; research organizations; host communities and the general public, particularly those in communities with planned or operating wind projects. Information will be disseminated through: (a) a series of topic-specific web conference briefings; (b) a one-day NEWEEP conference, back-to-back with a Utility Wind Interest Group one-day regional conference organized for this project; (c) posting briefing and conference materials on the New England Wind Forum (NEWF) web site and featuring the content on NEWF electronic newsletters distributed to an opt-in list of currently over 5000 individuals; (d) through interaction with and participation in Wind Powering America (WPA) state Wind Working Group meetings and WPA's annual All-States Summit, and (e) through the networks of project collaborators. Sustainable Energy Advantage, LLC (lead) and the National Renewable Energy Laboratory will staff the project, directed by an independent Steering Committee composed of a collaborative regional and national network of organizations. Major Participants - the Steering Committee: In addition to the applicants, the initial collaborators committing to form a Steering Committee consists of the Massachusetts Renewable Energy Trust; Maine Public Utilities Commission; New Hampshire office of Energy & Planning, the Connecticut Clean Energy Fund;, ISO New England; Utility Wind Interest Group; University of Massachusetts Wind Energy Center; Renewable Energy New England (a new partnership between the renewable energy industry and environmental public interest groups), and Lawrence Berkeley National Laboratory (conditionally). The Steering Committee will: (1) identify and prioritize topics of greatest interest or concern where detailed, objective and accurate information will advance the dialogue in the region; (2) identify critical outreach venues, influencers and experts; (3) direct and coordinate project staff; (4) assist project staff in planning briefings and conferences described below; (5) identify topics needing additional research or technical assistance and (6) identify and recruit additional steering committee members. Impacts/Benefits/Outcomes: By cutting through the clutter of competing and conflicting information on critical issues, this project is intended to encourage the market's acceptance of appropriately-sited wind energy generation.

Grace, Robert C.; Craddock, Kathryn A.; von Allmen, Daniel R.

2012-04-25T23:59:59.000Z

150

A simulation-based planning system for wind turbine construction  

Science Journals Connector (OSTI)

Wind turbine construction is a challenging undertaking due to the need to lift heavy loads to high locations in conditions of high and variable wind speeds. These conditions create great risks to contractors during the turbine assembly process. This ...

Dina Atef; Hesham Osman; Moheeb Ibrahim; Khaled Nassar

2010-12-01T23:59:59.000Z

151

Wyoming Wind Power Project (generation/wind)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Power > Generation Hydro Power Wind Power Monthly GSP BPA White Book Dry Year Tools Firstgov Wyoming Wind Power Project (Foote Creek Rim I and II) Thumbnail image of wind...

152

Offshore Wind Power USA  

Broader source: Energy.gov [DOE]

The Offshore Wind Power USA conference provides the latest offshore wind market updates and forecasts.

153

Requirements for Wind Development | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Requirements for Wind Development Requirements for Wind Development Requirements for Wind Development < Back Eligibility Commercial Construction Industrial Installer/Contractor Utility Savings Category Wind Buying & Making Electricity Program Info State Oklahoma Program Type Solar/Wind Permitting Standards In 2010, Oklahoma passed HB 2973, known as The Oklahoma Wind Energy Development Act. The bill becomes effective January 1, 2011. The Act provides sets rules for owners of wind energy facilities related to decommissioning, payments, and insurance. * Within one year of abandonment of a project, equipment from wind energy facilities must be removed and the land must be returned to its condition prior to the facility construction, except for roads. * After 15 years of operation, wind energy facility owners must file an

154

Distributed Wind Energy in Idaho  

SciTech Connect (OSTI)

Project Objective: This project is a research and development program aimed at furthering distributed wind technology. In particular, this project addresses some of the barriers to distributed wind energy utilization in Idaho. Background: At its core, the technological challenge inherent in Wind Energy is the transformation of a highly variable form of energy to one which is compatible with the commercial power grid or another useful application. A major economic barrier to the success of distributed wind technology is the relatively high capital investment (and related long payback periods) associated with wind turbines. This project will carry out fundamental research and technology development to address both the technological and economic barriers. � Active drive train control holds the potential to improve the overall efficiency of a turbine system by allowing variable speed turbine operation while ensuring a tight control of generator shaft speed, thus greatly simplifying power conditioning. � Recent blade aerodynamic advancements have been focused on large, utility-scale wind turbine generators (WTGs) as opposed to smaller WTGs designed for distributed generation. Because of Reynolds Number considerations, blade designs do not scale well. Blades which are aerodynamically optimized for distributed-scale WTGs can potentially reduce the cost of electricity by increasing shaft-torque in a given wind speed. � Grid-connected electric generators typically operate at a fixed speed. If a generator were able to economically operate at multiple speeds, it could potentially convert more of the wind�s energy to electricity, thus reducing the cost of electricity. This research directly supports the stated goal of the Wind and Hydropower Technologies Program for Distributed Wind Energy Technology: By 2007, reduce the cost of electricity from distributed wind systems to 10 to 15 cents/kWh in Class 3 wind resources, the same level that is currently achievable in Class 5 winds.

Gardner, John; Ferguson, James; Ahmed-Zaid, Said; Johnson, Kathryn; Haynes, Todd; Bennett, Keith

2009-01-31T23:59:59.000Z

155

offshore wind farm  

Science Journals Connector (OSTI)

offshore wind farm, wind farm [‘Wind park’ which one may find on the ... engineers and should not be used. A wind farm consists of a network of wind turbines] ? Windkraftanlage f, Windpark m; Offshore

2014-08-01T23:59:59.000Z

156

Wind Energy Leasing Handbook  

E-Print Network [OSTI]

Wind Energy Leasing Handbook Wind Energy Leasing Handbook E-1033 Oklahoma Cooperative Extension?..................................................................................................................... 31 What do wind developers consider in locating wind energy projects?............................................................................................ 37 How do companies and individuals invest in wind energy projects?....................................................................

Balasundaram, Balabhaskar "Baski"

157

Design Wind Speed  

Science Journals Connector (OSTI)

Wind is characterized by various different parameters. They include the following items: (1) wind speed, such as the mean wind speed and maximum instantaneous wind speed; (2) wind direction such as the azimuth di...

Yozo Fujino; Kichiro Kimura; Hiroshi Tanaka

2012-01-01T23:59:59.000Z

158

Wind Power Amercia Final Report  

SciTech Connect (OSTI)

The objective of this grant was to further the development of Montana�¢����s vast wind resources for small, medium and large scale benefits to Montana and the nation. This was accomplished through collaborative work with wind industry representatives, state and local governments, the agricultural community and interested citizens. Through these efforts DEQ was able to identify development barriers, educate and inform citizens as well as participate in regional and national dialogue that will spur the development of wind resources.

Brian Spangler, Kathi Montgomery and Paul Cartwright

2012-01-30T23:59:59.000Z

159

Wind Powering America: New England Wind Forum  

Wind Powering America (EERE)

About the New England Wind Forum About the New England Wind Forum New England Wind Energy Education Project Historic Wind Development in New England State Activities Projects in New England Building Wind Energy in New England Wind Resource Wind Power Technology Economics Markets Siting Policy Technical Challenges Issues Small Wind Large Wind Newsletter Perspectives Events Quick Links to States CT MA ME NH RI VT Bookmark and Share The New England Wind Forum was conceived in 2005 as a platform to provide a single, comprehensive and objective source of up-to-date, Web-based information on a broad array of wind-energy-related issues pertaining to New England. The New England Wind Forum provides information to wind energy stakeholders through Web site features, periodic newsletters, and outreach activities. The New England Wind Forum covers the most frequently discussed wind energy topics.

160

Wind Energy Assessment Study for Nevada -- Tall Tower Deployment (Stone Cabin): 26 June 2005 - 31 December 2007  

SciTech Connect (OSTI)

The objective of this work effort was to characterize wind shear and turbulence for representative wind-developable areas in Nevada.

Koracin, D.; Reinhardt, R.; McCurdy, G.; Liddle, M.; McCord, T.; Vellore, R.; Minor, T.; Lyles, B.; Miller, D.; Ronchetti, L.

2009-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Journal of Wind Engineering and Industrial Aerodynamics 92 (2004) 789804  

E-Print Network [OSTI]

of wind turbines against extreme loads is the focus of this study. A procedure to establish nominal loads as in the extreme response given wind conditions. A detailed example is presented where three alternative nominal conditions and short-term maximum response (given wind conditions) will yield extreme design loads that might

Manuel, Lance

162

Airborne sound propagation over sea during offshore wind farm piling  

Science Journals Connector (OSTI)

Offshore piling for wind farm construction has attracted a lot of attention in recent years due to the extremely high noise emission levels associated with such operations. While underwater noise levels were shown to be harmful for the marine biology the propagation of airborne piling noise over sea has not been studied in detail before. In this study detailed numerical calculations have been performed with the Green's Function Parabolic Equation (GFPE) method to estimate noise levels up to a distance of 10?km. Measured noise emission levels during piling of pinpiles for a jacket-foundation wind turbine were assessed and used together with combinations of the sea surface state and idealized vertical sound speed profiles (downwind sound propagation). Effective impedances were found and used to represent non-flat sea surfaces at low-wind sea states 2 3 and 4. Calculations show that scattering by a rough sea surface which decreases sound pressure levels exceeds refractive effects which increase sound pressure levels under downwind conditions. This suggests that the presence of wind even when blowing downwind to potential receivers is beneficial to increase the attenuation of piling sound over the sea. A fully flat sea surface therefore represents a worst-case scenario.

2014-01-01T23:59:59.000Z

163

Reliability models of wind farms considering wind speed correlation and WTG outage  

Science Journals Connector (OSTI)

Abstract Wind speed correlation and wind turbine generator (WTG) outage are two factors affecting the reliability model of wind farms, but they are not addressed simultaneously in the existing literature. Meanwhile, WTG outage is reported to be dependent with wind speed to some extent. Therefore, the extended reliability models of wind farms incorporating both of these two factors and the dependency between WTG outage and wind speed are proposed in this paper. To consider the uncertainties and dependencies of wind speed and WTG failure, Copula method is applied to simulate correlated random variables representing for wind speed and the number of failed WTG units. Moreover, the linear apportioning technique is used to create multistate reliability models of wind farms from hourly wind power models. A number of sensitivity analyses on the modified IEEE RTS with wind power are conducted to validate the proposed reliability models for generation adequacy assessment. Case studies show that the generation adequacy indices increase with the correlation of wind speed and WTG forced outage rate (FOR). It is meaningful to point out that the effect of dependency between wind speed and WTG FOR on generation adequacy is minimal when WTG outages are independent, but it will be substantially larger when WTG outages are highly dependent. The proposed multistate reliability models of wind farms provide foundation for the reliability assessment of power systems with wind power integrated.

Fan Chen; Fangxing Li; Zhinong Wei; Guoqiang Sun; Jun Li

2015-01-01T23:59:59.000Z

164

Wind News  

Broader source: Energy.gov (indexed) [DOE]

news Office of Energy Efficiency & Renewable news Office of Energy Efficiency & Renewable Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585 en New Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters http://energy.gov/eere/articles/new-report-shows-trend-toward-larger-offshore-wind-systems-11-advanced-stage-projects wind-systems-11-advanced-stage-projects" class="title-link">New Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters

165

Wave represents displacement Wave represents pressure Source -Sound Waves  

E-Print Network [OSTI]

Wave represents displacement Wave represents pressure Source - Sound Waves Distance between crests is wavelength Number of crests passing a point in 1 second is frequency Wave represents pressure Target - Radio Waves Distance between crests is wavelength Number of crests passing a point in 1 second is frequency

Colorado at Boulder, University of

166

A comparison of measured wind park load histories with the WISPER and WISPERX load spectra  

SciTech Connect (OSTI)

The blade-loading histories from two adjacent Micon 65/13 wind turbines are compared with the variable-amplitude test-loading histories known as the WISPER and WISPERX spectra. These standardized loading sequences were developed from blade flapwise load histories taken from nine different horizontal-axis wind turbines operating under a wide range of conditions in Europe. The subject turbines covered a broad spectrum of rotor diameters, materials, and operating environments. The final loading sequences were developed as a joint effort of thirteen different European organizations. The goal was to develop a meaningful loading standard for horizontal-axis wind turbine blades that represents common interaction effects seen in service. In 1990, NREL made extensive load measurements on two adjacent Micon 65/13 wind turbines in simultaneous operation in the very turbulent environment of a large wind park. Further, before and during the collection of the loads data, comprehensive measurements of the statistics of the turbulent environment were obtained at both the turbines under test and at two other locations within the park. The trend to larger but lighter wind turbine structures has made an understanding of the expected lifetime loading history of paramount importance. Experience in the US has shown that the turbulence-induced loads associated with multi-row wind parks in general are much more severe than for turbines operating individually or within widely spaced environments. Multi-row wind parks are much more common in the US than in Europe. In this paper we report on our results in applying the methodology utilized to develop the WISPER and WISPERX standardized loading sequences using the available data from the Micon turbines. While the intended purpose of the WISPER sequences were not to represent a specific operating environment, we believe the exercise is useful, especially when a turbine design is likely to be installed in a multi-row wind park.

Kelley, N.D.

1995-01-01T23:59:59.000Z

167

Design guidelines for H-Darrieus wind turbines: Optimization of the annual energy yield  

Science Journals Connector (OSTI)

Abstract H-Darrieus wind turbines are gaining popularity in the wind energy market, particularly as they are thought to represent a suitable solution even in unconventional installation areas. To promote the diffusion of this technology, industrial manufacturers are continuously proposing new and appealing exterior solutions, coupled with tempting rated-power offers. The actual operating conditions of a rotor over a year can be, however, very different from the nominal one and strictly dependent on the features of the installation site. Based on these considerations, a turbine optimization oriented to maximize the annual energy yield, instead of the maximum power, is thought to represent a more interesting solution. With this goal in mind, 21,600 test cases of H-Darrieus rotors were compared on the basis of their energy-yield capabilities for different annual wind distributions in terms of average speed. The wind distributions were combined with the predicted performance maps of the rotors obtained with a specifically developed numerical code based on a Blade Element Momentum (BEM) approach. The influence on turbine performance of the cut-in speed was accounted for, as well as the limitations due to structural loads (i.e. maximum rotational speed and maximum wind velocity). The analysis, carried out in terms of dimensionless parameters, highlighted the aerodynamic configurations able to ensure the largest annual energy yield for each wind distribution and set of aerodynamic constraints.

Alessandro Bianchini; Giovanni Ferrara; Lorenzo Ferrari

2015-01-01T23:59:59.000Z

168

Wind Energy Benefits, Wind Powering America (WPA) (Fact Sheet...  

Broader source: Energy.gov (indexed) [DOE]

Energy Benefits, Wind Powering America (WPA) (Fact Sheet), Wind And Water Power Program (WWPP) Wind Energy Benefits, Wind Powering America (WPA) (Fact Sheet), Wind And Water Power...

169

NREL: Technology Transfer - NREL Analyzes Floating Offshore Wind...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NREL Analyzes Floating Offshore Wind Technology for Statoil November 6, 2014 NREL engineers traveled to Oslo, Norway, to meet with Statoil representatives regarding NREL's analysis...

170

2014 Wind Program Peer Review Report  

Broader source: Energy.gov [DOE]

The Wind Program Peer Review Meeting was held March 24-28, 2014 in Arlington, VA. Principle investigators from the Energy Department, National Laboratories, academic, and industry representatives presented the progress of their DOE-funded research. This report documents the formal, rigorous evaluation process and findings of nine independent reviewers who examined the technical, scientific, and business results of Wind Program funded projects, as well as the productivity and management effectiveness of the Wind Program itself.

171

Simulation of winds as seen by a rotating vertical axis wind turbine blade  

SciTech Connect (OSTI)

The objective of this report is to provide turbulent wind analyses relevant to the design and testing of Vertical Axis Wind Turbines (VAWT). A technique was developed for utilizing high-speed turbulence wind data from a line of seven anemometers at a single level to simulate the wind seen by a rotating VAWT blade. Twelve data cases, representing a range of wind speeds and stability classes, were selected from the large volume of data available from the Clayton, New Mexico, Vertical Plane Array (VPA) project. Simulations were run of the rotationally sampled wind speed relative to the earth, as well as the tangential and radial wind speeds, which are relative to the rotating wind turbine blade. Spectral analysis is used to compare and assess wind simulations from the different wind regimes, as well as from alternate wind measurement techniques. The variance in the wind speed at frequencies at or above the blade rotation rate is computed for all cases, and is used to quantitatively compare the VAWT simulations with Horizontal Axis Wind Turbine (HAWT) simulations. Qualitative comparisons are also made with direct wind measurements from a VAWT blade.

George, R.L.

1984-02-01T23:59:59.000Z

172

Importance of thermal effects and sea surface roughness for wind resource and wind shear at offshore sites  

E-Print Network [OSTI]

at offshore sites Bernhard Lange*, Søren Larsen# , Jørgen Højstrup# , Rebecca Barthelmie# *ForWind - Centre of offshore wind power utilisation depends on the favourable wind conditions offshore as compared to sites for this flow. It's applicability for wind power prediction at offshore sites is investigated using data from

Heinemann, Detlev

173

NREL: Wind Research - Wind Resource Assessment  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Resource Assessment Wind Resource Assessment A map of the United States is color-coded to indicate the high winds at 80 meters. This map shows the wind resource at 80 meters for both land-based and offshore wind resources in the United States. Correct estimation of the energy available in the wind can make or break the economics of wind plant development. Wind mapping and validation techniques developed at the National Wind Technology Center (NWTC) along with collaborations with U.S. companies have produced high-resolution maps of the United States that provide wind plant developers with accurate estimates of the wind resource potential. State Wind Maps International Wind Resource Maps Dynamic Maps, GIS Data, and Analysis Tools Due to the existence of special use airspace (SUA) (i.e., military airspace

174

New England Wind Forum: Wind Power Technology  

Wind Powering America (EERE)

Wind Power Technology Wind Power Technology Modern wind turbines have become sophisticated power plants while the concept of converting wind energy to electrical energy remains quite simple. Follow these links to learn more about the science behind wind turbine technology. Wind Power Animation An image of a scene from the wind power animation. The animation shows how moving air rotates a wind turbine's blades and describes how the internal components work to produce electricity. It shows small and large wind turbines and the differences between how they are used, as stand alone or connected to the utility grid. How Wind Turbines Work Learn how wind turbines make electricity; what are the types, sizes, and applications of wind turbines; and see an illustration of the components inside a wind turbine.

175

2011 Wind Technologies Market Report  

E-Print Network [OSTI]

that includes wind turbine towers. 2011 Wind TechnologiesSets Other Wind Turbine Components Towers Wind-Poweredselected wind turbine components includes towers as well as

Bolinger, Mark

2013-01-01T23:59:59.000Z

176

2010 Wind Technologies Market Report  

E-Print Network [OSTI]

that includes wind turbine towers. 2010 Wind TechnologiesImports : Other Wind Turbine Components Towers Wind-Poweredselected wind turbine components includes towers as well as

Wiser, Ryan

2012-01-01T23:59:59.000Z

177

On the effect of spatial dispersion of wind power plants on the wind energy capacity credit  

Science Journals Connector (OSTI)

Wind energy is now a mature technology and can be considered as a significant contributor in reducing CO2 emissions and protecting the environment. To meet the wind energy national targets, effective implementation of massive wind power installed capacity in the power supply system is required. Additionally, capacity credit is an important issue for an unstable power supply system as in Greece. To achieve high and reliable wind energy penetration levels into the system, the effect of spatial dispersion of wind energy installations within a very wide area (e.g. national level) on the power capacity credit should be accounted for. In the present paper, a methodology for estimating the effect of spatial dispersion of wind farm installations on the capacity credit is presented and applied for the power supply system of Greece. The method is based on probability theory and makes use of wind forecasting models to represent the wind energy potential over any candidate area for future wind farm installations in the country. Representative wind power development scenarios are studied and evaluated. Results show that the spatial dispersion of wind power plants contributes beneficially to the wind capacity credit.

George Caralis; Yiannis Perivolaris; Konstantinos Rados; Arthouros Zervos

2008-01-01T23:59:59.000Z

178

Modelling of offshore wind turbine wakes with the wind farm program FLaP  

E-Print Network [OSTI]

Modelling of offshore wind turbine wakes with the wind farm program FLaP Bernhard Lange(1) , Hans been extended to improve the description of wake development in offshore conditions, especially the low from the Danish offshore wind farm Vindeby. Vertical wake profiles and mean turbulence intensities

Heinemann, Detlev

179

Energy 101: Wind Turbines  

ScienceCinema (OSTI)

See how wind turbines generate clean electricity from the power of the wind. Highlighted are the various parts and mechanisms of a modern wind turbine.

None

2013-05-29T23:59:59.000Z

180

Balancing of Wind Power.  

E-Print Network [OSTI]

?? In the future, renewable energy share, especially wind power share, in electricity generation is expected to increase. Due to nature of the wind, wind… (more)

Ülker, Muhammed Akif

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Energy 101: Wind Turbines  

SciTech Connect (OSTI)

See how wind turbines generate clean electricity from the power of the wind. Highlighted are the various parts and mechanisms of a modern wind turbine.

None

2011-01-01T23:59:59.000Z

182

WINDExchange: Learn About Wind  

Wind Powering America (EERE)

Curricula & Teaching Materials Resources Learn About Wind Learn about how wind energy generates power; where the best wind resources are; how you can own, host, partner...

183

Site insolation and wind power characteristics: technical report western region (south section)  

SciTech Connect (OSTI)

This phase of the Site Insolation and Wind Power Characteristics Study was performed to provide statistical information on the expected future availability of solar and wind power at various sites in the Western Region (South Section) of the US Historic data (SOLMET), at 22 National Weather Service stations with hourly solar insolation and collateral meteorological information, were interrogated to provide an estimate of future trends. Solar data are global radiation incident on a horizontal surface, and wind data represent wind power normal to the air flow. Selected insolation and wind power conditions were investigated for their occurrence and persistence, for defined periods of time, on a monthly basis. Global horizontal insolation is related to inclined surfaces at each site. Ratios are provided, monthly, for multiplying global insolation to obtain insolation estimates on south-facing surfaces inclined at different angles with respect to the horizontal. Also, joint probability distribution tables are constructed showing the number of occurrences, out of a finite sample size, of daily average solar and wind power within selected intervals, by month. Information of this nature is intended as an aid to preliminary planning activities for the design and operation of solar and wind energy utilization and conversion systems.

None

1980-08-01T23:59:59.000Z

184

Site insolation and wind power characteristics: technical report western region (north section)  

SciTech Connect (OSTI)

This phase of the Site Insolation and Wind Power Characteristics Study was performed to provide statistical information on the expected future availability of solar and wind power at various sites in the Western Region (North Section) of the US Historic data (SOLMET), at 21 National Weather Service stations with hourly solar insolation and collateral meteorological information, were interrogated to provide an estimate of future trends. Solar data are global radiation incident on a horizontal surface, and wind data represent wind power normal to the air flow. Selected insolation and wind power conditions were investigated for their occurrence and persistence, for defined periods of time, on a monthly basis. Global horizontal insolation is related to inclined surfaces at each site. Ratios are provided, monthly, for multiplying global insolation to obtain insolation estimates on south-facing surfaces inclined at different angles with respect to the horizontal. Also, joint probability distribution tables are constructed showing the number of occurrences, out of a finite sample size, of daily average solar and wind power within selected intervals, by month. Information of this nature is intended as an aid to preliminary planning activities for the design and operation of solar and wind energy utilization and conversion systems.

None

1980-08-01T23:59:59.000Z

185

Wind power and Wind power and  

E-Print Network [OSTI]

Wind power and the CDM #12; Wind power and the CDM Emerging practices in developing wind power 2005 Jyoti P. Painuly, Niels-Erik Clausen, Jørgen Fenhann, Sami Kamel and Romeo Pacudan #12; WIND POWER AND THE CDM Emerging practices in developing wind power projects for the Clean Development Mechanism Energy

186

An analysis of Guatemalan wind potential  

Science Journals Connector (OSTI)

This paper contains an analysis of Guatemalan wind potential based on hourly measurements of wind velocity made by the National Institute of Meteorology (INSIVUMEH), using anemometers at a height of 10 m, in seven different places. Due to the complex terrain of the country the results must be considered as representative only of the particular place in which the measurements were made.

Mario E. Rivera G.

1987-01-01T23:59:59.000Z

187

Turbulence Characteristics in Offshore Wind Farms from LES Simulations of Lillgrund Wind Farm  

Science Journals Connector (OSTI)

Abstract The effect of wind turbine wakes in large offshore wind energy arrays can be a substantial factor in affecting the performance of turbines inside the array. Turbulent mixing plays a key role in the wake recovery, having a significant effect on the length over which the wake is strong enough to affect the performance of other turbines significantly. We highlight how turbulence affects wind turbine wakes using results from LES simulations of Lillgrund offshore wind farm in the context of SCADA data selected to mirror the wind conditions simulated. The analysis here concentrated on temporal spectra of wind velocities measured by the turbine's nacelle anemometer and calculated at the turbine locations in the computational model. The effect of the wind turbine rotor on the downstream flow is quantified by analysing the change in spectral features of turbines within the wind farm compared to turbines at the side of the farm exposed to the wind.

Wolf-Gerrit Früh; Angus C.W. Creech; A. Eoghan Maguire

2014-01-01T23:59:59.000Z

188

WIND ENERGY POLICIES IN TURKEY  

E-Print Network [OSTI]

Energy is a strategic parameter, which demonstrates the development of a country. In Turkey, energy and energy politics are mainly based on the supply due to the inadequate fossil fuel resources. In the beginning of the 21 st century, due to the increase in the price of fossil fuels and environmental burdens, many countries showed renewed interest in alternative energy resources. Climate change and environmental problems caused by greenhouse gas emissions showed the importance of renewable energy resources and especially wind energy. The major reason for the interest in wind energy technologies out of many renewable energy resources is the bulk availability of this resource without any cost. In Turkey, the major solution to the dependency on foreign energy resources is: domestic production, development, and operation of renewable energy resources. However, in order to make these investments, suitable conditions and strategies must be generated. In order to accelerate the wind energy investments in Turkey: (i) the problems related to the interconnectivity of the wind power systems to the grid must be solved (ii) the guaranteed purchase price of the wind energy must be updated (iii) and the construction/operation of wind power plants must be subsidised by government initiatives. In this study, the politics related to wind energy is extensively reviewed and the possible suggestions/solutions related to the acceleration of wind energy production and investments in Turkey are given.

S?tk? Güner; Irem Firtina; Mehmet Meliko?lu; Ayhan Albostan

189

New England Wind Forum: Wind Power Economics  

Wind Powering America (EERE)

State Activities Projects in New England Building Wind Energy in New England Wind Resource Wind Power Technology Economics Cost Components Determining Factors Influencing Wind Economics in New England How does wind compare to the cost of other electricity options? Markets Siting Policy Technical Challenges Issues Small Wind Large Wind Newsletter Perspectives Events Quick Links to States CT MA ME NH RI VT Bookmark and Share Wind Power Economics Long-Term Cost Trends Since the first major installations of commercial-scale wind turbines in the 1980s, the cost of energy from wind power projects has decreased substantially due to larger turbine generators, towers, and rotor lengths; scale economies associated with larger projects; improvements in manufacturing efficiency, and technological advances in turbine generator and blade design. These technological advances have allowed for higher generating capacities per turbine and more efficient capture of wind, especially at lower wind speeds.

190

New England Wind Forum: Large Wind  

Wind Powering America (EERE)

Small Wind Small Wind Large Wind Newsletter Perspectives Events Quick Links to States CT MA ME NH RI VT Bookmark and Share Large Wind When establishing wind farms, wind energy developers generally approach landowners where they want to build. Interest in wind farms is frequently spurred by external pressures such as tax and other financial incentives and legislative mandates. Since each situation is influenced by local policies and permitting, we can only provide general guidance to help you learn about the process of installing wind turbines. Publications Wind Project Development Process Permitting of Wind Energy Facilities: A Handbook. (August 2002). National Wind Coordinating Collaborative. Landowner Frequently Asked Questions and Answers. (August 2003). "State Wind Working Group Handbook." pp. 130-133.

191

NREL: Wind Research - International Wind Resource Maps  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

projections of wind resources worldwide. This allows for more accurate siting of wind turbines and has led to the recognition of higher class winds in areas where none were...

192

Facility Representative Program: Facility Representative of the Year  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Facility Representative of the Year Award Facility Representative of the Year Award Annual Facility Representative Workshop Facility Representative of the Year Award Process Facility Representative of the Year Award 2012 WINNER: John C. Barnes, Savannah River Operations Office Letter from DNFSB Chairman Peter S. Winokur, Ph.D 2012 Nominees: Peter W. Kelley, Brookhaven Site Office James E. Garza, Idaho Operations Office (EM) William R. Watson, Idaho Operations Office (NE) Darlene S. Rodriguez, Los Alamos Field Office Robert R. Robb, Livermore Field Office Kenneth W. Wethington, Grand Junction Project Office's Moab site Thomas P. Denny, Nevada Field Office Michael J. Childers, NNSA Production Office Pantex Site Catherine T. Schidel, NNSA Production Office Y12 Site Chelsea D. Hubbard, Oak Ridge Operations Office (EM)

193

FAQS Reference Guide – Facility Representative  

Broader source: Energy.gov [DOE]

This reference guide addresses the competency statements in the October 2010 edition of DOE-STD-1151-2010, Facility Representative Functional Area Qualification Standard.

194

Validation of Power Output for the WIND Toolkit  

SciTech Connect (OSTI)

Renewable energy integration studies require wind data sets of high quality with realistic representations of the variability, ramping characteristics, and forecast performance for current wind power plants. The Wind Integration National Data Set (WIND) Toolkit is meant to be an update for and expansion of the original data sets created for the weather years from 2004 through 2006 during the Western Wind and Solar Integration Study and the Eastern Wind Integration Study. The WIND Toolkit expands these data sets to include the entire continental United States, increasing the total number of sites represented, and it includes the weather years from 2007 through 2012. In addition, the WIND Toolkit has a finer resolution for both the temporal and geographic dimensions. Three separate data sets will be created: a meteorological data set, a wind power data set, and a forecast data set. This report describes the validation of the wind power data set.

King, J.; Clifton, A.; Hodge, B. M.

2014-09-01T23:59:59.000Z

195

Advanced Hydraulic Wind Energy  

Science Journals Connector (OSTI)

The Jet Propulsion Laboratory, California Institute of Technology, has developed a novel advanced hydraulic wind energy design, which has up to 23% performance improvement over conventional wind turbine and conventional hydraulic wind energy systems ... Keywords: wind, tide, energy, power, hydraulic

Jack A. Jones; Allan Bruce; Adrienne S. Lam

2013-04-01T23:59:59.000Z

196

WINDExchange: Wind Economic Development  

Wind Powering America (EERE)

help you analyze the economics of a small wind electric system and decide whether wind energy will work for you. Wind Energy Finance Online Calculator Wind Energy Finance developed...

197

Exploiting Wind Versus Coal  

Science Journals Connector (OSTI)

...be offset with turbine mass production...of installed turbines, more than the...Denmark have wind parks offshore, where winds...of installed turbines, more than the...Denmark have wind parks offshore, where winds...

Mark Z. Jacobson; Gilbert M. Masters

2001-08-24T23:59:59.000Z

198

Improved methodology for design of low wind speed specific wind turbine blades  

Science Journals Connector (OSTI)

Abstract The majority of wind power is currently produced on high wind speed sites, and the standard design of wind turbine blades has evolved to be structurally efficient under these conditions. Recently, sites with lower quality wind resources have begun to be considered for new wind farms. This study confirms the expectation that the standard high wind speed design process results in less efficient structures when used for low wind speed conditions, and that a low wind speed specific design process is able to yield structural improvements. A comparative structural analysis of generic blades from high and low wind speed turbines quantifies the differences in structural performance between high and low wind speed blades, and indicates the ways in which the standard design process should be modified to suit a low wind speed specific design. An improved design method specifically for low wind speed blades is proposed, with more emphasis on stiffness than in the standard high wind speed design. The improved design process results in a lighter and cheaper blade than the conventionally designed one, whilst still fulfilling the design requirements.

R.H. Barnes; E.V. Morozov; K. Shankar

2015-01-01T23:59:59.000Z

199

A Comparison of Single- and Multi-parameter Wave Criteria for Accessing Wind Turbines in Strategic Maintenance and Logistics Models for Offshore Wind Farms  

Science Journals Connector (OSTI)

Abstract Different vessel types for transferring technicians for maintenance and inspection of offshore wind farms are often evaluated and compared by their limiting significant wave height for accessing the wind turbines. The limiting significant wave height is also the parameter that is often used as the access criteria in strategic decision support tools for maintenance and logistics for offshore wind farms. In practice, however, other wave parameters, such as the peak wave period and wave heading, have major influence on the accessibility to a wind turbine for a given vessel. We compare the use of single-parameter and multi-parameter wave criteria for access to wind turbines in two strategic maintenance and logistics models for offshore wind farms: one simulation model and one optimization model. Multi-parameter wave criteria in the form of limiting significant wave heights as functions of peak wave period and wave heading are obtained by numerical analysis of the vessel docking operation. Results for availability, operation and maintenance costs and the optimal vessel fleet size and mix are found using both these multi-parameter wave criteria and using a corresponding single-parameter limiting significant wave height. The comparison indicates that the use of a single limiting significant wave height can give similar results as when using more complex multi-parameter wave criteria. An important precondition is that the single limiting significant wave height is carefully chosen to represent the vessel and the wave conditions.

Iver Bakken Sperstad; Elin E. Halvorsen-Weare; Matthias Hofmann; Lars Magne Nonås; Magnus Stålhane; MingKang Wu

2014-01-01T23:59:59.000Z

200

NREL: Wind Research - Wind Energy Videos  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Energy Videos The National Wind Technology Center (NWTC) is pleased to offer video presentations of its world-class capabilities, facilities, research areas, and personnel. As...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

wind power station  

Science Journals Connector (OSTI)

wind power station [It may consist of just one wind turbine or a network of windmills] ? Windkraftanlage

2014-08-01T23:59:59.000Z

202

Investigation of aerodynamic braking devices for wind turbine applications  

SciTech Connect (OSTI)

This report documents the selection and preliminary design of a new aerodynamic braking system for use on the stall-regulated AWT-26/27 wind turbines. The goal was to identify and design a configuration that offered improvements over the existing tip brake used by Advanced Wind Turbines, Inc. (AWT). Although the design objectives and approach of this report are specific to aerodynamic braking of AWT-26/27 turbines, many of the issues addressed in this work are applicable to a wider class of turbines. The performance trends and design choices presented in this report should be of general use to wind turbine designers who are considering alternative aerodynamic braking methods. A literature search was combined with preliminary work on device sizing, loads and mechanical design. Candidate configurations were assessed on their potential for benefits in the areas of cost, weight, aerodynamic noise, reliability and performance under icing conditions. As a result, two configurations were identified for further study: the {open_quotes}spoiler-flap{close_quotes} and the {open_quotes}flip-tip.{close_quotes} Wind tunnel experiments were conducted at Wichita State University to evaluate the performance of the candidate aerodynamic brakes on an airfoil section representative of the AWT-26/27 blades. The wind tunnel data were used to predict the braking effectiveness and deployment characteristics of the candidate devices for a wide range of design parameters. The evaluation was iterative, with mechanical design and structural analysis being conducted in parallel with the braking performance studies. The preliminary estimate of the spoiler-flap system cost was $150 less than the production AWT-26/27 tip vanes. This represents a reduction of approximately 5 % in the cost of the aerodynamic braking system. In view of the preliminary nature of the design, it would be prudent to plan for contingencies in both cost and weight.

Griffin, D.A. [R. Lynette & Associates, Seattle, WA (United States)

1997-04-01T23:59:59.000Z

203

ISET-Wind-Index Assessment of the Annual Available Wind Energy  

E-Print Network [OSTI]

Particularly in years with wind speeds that are clearly below average, dissatisfaction of operators and even liquidity problems are sparked through the unexpected low annual power production. An objective standard for the evaluation of the respective “wind year ” is required for the internal estimation of the performance of wind farms, and for justification to share owners and banks. The annual wind conditions are composed from such a multitude of meteorological situations, differing from location to location, that the available wind energy at every individual location develops totally differently. A single code is therefore not sufficient to describe the “wind year ” in Germany and, moreover, the evaluation of annual available wind energy must be carried out separately for the smallest areas possible. With the support of the Gothaer Rückversicherungen AG, a procedure has been developed at ISET which provides the proportion of the respective annual available wind energy, in relation to the long-term average available wind energy, for each 10 km x 10 km sized plan area in Germany. This amount, the ISET-Wind-Index, is founded on wind measurements at locations that are typical for wind energy use and therefore presents an objective standard. The measurement grid is part of the “Scientific Measurement and Evaluation Programme ” (WMEP), which accompanies the “250 MW Wind ” project of the German Federal Ministry for Economy and Labour. The ISET-Wind-Index, which will be regularly updated, provides an objective standard for the estimation of annual available

Berthold Hahn; Kurt Rohrig

2003-01-01T23:59:59.000Z

204

NREL: Wind Research - Small Wind Turbine Webinars  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Small Wind Turbine Webinars Small Wind Turbine Webinars Here you will find webinars about small wind turbines that NREL hosted. Introducing WindLease(tm): Making Wind Energy Affordable NREL and the American Solar Energy Society (ASES) Wind Division co-hosted this webinar. (Text Version.) Date: August 1, 2013 Run Time: 40 minutes Joe Hess, VP of Business Development at United Wind, described United Wind's WindQuote and WindLease Program and explained the process from the dealer's and consumer's perspective. Texas Renewable Energy Industries Association NREL and the American Solar Energy Society (ASES) Wind Division co-hosted this webinar. (Text Version). Date: March 7, 2013 Run Time: 1 hour Russel Smith, Texas Renewable Energy Industries Association executive director and co-founder, provided an overview of the trade association

205

New England Wind Forum: Small Wind  

Wind Powering America (EERE)

Wind for Schools Project Funding Case Studies: Thomas Harrison Middle School, Virginia Wind for Schools Project Funding Case Studies: Thomas Harrison Middle School, Virginia August 26, 2013 Workshop Explores Information's Role in Wind Project Siting: A Wind Powering America Success Story November 19, 2012 More News Subscribe to News Updates Events Renewable Energy Market Update Webinar January 29, 2014 Strategic Energy Planning: Webinar February 26, 2014 Introduction to Wind Systems March 10, 2014 More Events Publications 2012 Market Report on Wind Technologies in Distributed Applications August 12, 2013 More Publications Features Sign up for the New England Wind Forum Newsletter. New England Wind Forum About the New England Wind Forum New England Wind Energy Education Project Historic Wind Development in New England State Activities Projects in New England

206

NREL: Wind Research - Small Wind Turbine Development  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Small Wind Turbine Development Small Wind Turbine Development A photo of Southwest Windpower's Skystream wind turbine in front of a home. PIX14936 Southwest Windpower's Skystream wind turbine. A photo of the Endurance wind turbine. PIX15006 The Endurance wind turbine. A photo of the Atlantic Orient Corporation 15/50 wind turbine at the National Wind Technology Center. PIX07301 The Atlantic Orient Corporation 15/50 wind turbine at the National Wind Technology Center. NREL supports continued market expansion of small wind turbines by funding manufacturers through competitive solicitations (i.e., subcontracts and/or grants) to refine prototype systems leading to commercialization. Learn more about the turbine development projects below. Skystream NREL installed and tested an early prototype of this turbine at the

207

Calculation Method of Losses and Efficiency of Wind Generators  

Science Journals Connector (OSTI)

In the methods presented in this chapter, wind speed is used as the input data, ... conditions of the WG system, for example, wind turbine output, generator output, output power to the power grid, and various los...

Junji Tamura

2012-01-01T23:59:59.000Z

208

Facility Representative Program: Qualification Standards  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Training & Qualification Information Training & Qualification Information Qualification Standards DOE Order Self-Study Modules DOE Fundamentals Handbooks Nuclear Safety Basis Self-Study Guide Energy Online Courses Available Link to National Training Center Basic Courses for Facility Representative Qualification Recommended Courses to Expand Facility Representative's Knowledge Base Qualification Standards General Technical Base Qualification Standard, Qualification Card & Reference Guide -- GTB Qualification Standard (DOE-STD-1146-2007), December 2007 [PDF] -- GTB Qualification Card, December 2007 [DOC] -- GTB "Gap" Qualification Card, December 2007 [DOC] -- GTB Qualification Standard Reference Guide, May 2008 [PDF] Facility Representative Qualification Standard, Qualification Card & Reference Guide

209

Microsoft Word - WACM wind.doc  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

WACM Wind Production WACM Wind Production Summary Overview October 2006 Summary by Joseph Liberatore 2 The following report is designed to give a graphical representation of the wind production on Western's transmission system in the Western Area Colorado/Missouri (WACM) control area for five (5) wind farms. A map and the general locations of the various farms is shown in figure A. Production output graphs of farms A, B, C, D and E were created to be read as follows The horizontal (X) axis is hour of day in military time and The vertical (Y) axis is month of year from January thru December, 1 thru 12 respectively. Color variations are to be interpreted as follows: Dark blue areas represent little or no wind production and are graduated to bright red which depict maximum wind farm output. All levels are normalized

210

WPA Omnibus Award MT Wind Power Outreach  

SciTech Connect (OSTI)

The objective of this grant was to further the development of Montanaâ??s vast wind resources for small, medium, and large scale benefits to Montana and the nation. This was accomplished through collaborative work with wind industry representatives, state and local governments, the agricultural community, and interested citizens. Through these efforts MT Dept Environmental Quality (DEQ) was able to identify development barriers, educate and inform citizens, as well as to participate in regional and national dialogue that will spur the development of wind resources. The scope of DEQâ??s wind outreach effort evolved over the course of this agreement from the development of the Montana Wind Working Group and traditional outreach efforts, to the current focus on working with the stateâ??s university system to deliver a workforce trained to enter the wind industry.

Brian Spangler, Manager Energy Planning and Renewables

2012-01-30T23:59:59.000Z

211

NREL: Wind Research - Offshore Wind Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Offshore Wind Research Offshore Wind Research Photo of a European offshore wind farm. Early progress in European Offshore Wind Energy over the last decade provides a glimpse into the vast potential of the global offshore resource. For more than eight years, NREL has worked with the Department of Energy to become an international leader in offshore wind energy research. Capabilities NREL's offshore wind capabilities focus on critical areas that reflect the long-term needs of the offshore wind energy industry and the U.S. Department of Energy including: Offshore Design Tools and Methods Offshore Standards and Testing Energy Analysis of Offshore Systems Offshore Wind Resource Characterization Grid Integration of Offshore Wind Key Research NREL documented the status of offshore wind energy in the United States in

212

NREL: Wind Research - Site Wind Resource Characteristics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Site Wind Resource Characteristics Site Wind Resource Characteristics A graphic showing the location of National Wind Technology Center and its wind power class 2. Click on the image to view a larger version. Enlarge image This graphic shows the wind power class at the National Wind Technology Center. You can download a printable copy. The National Wind Technology Center (NWTC) is on the Great Plains just miles from the Rocky Mountains. The site is flat and covered with short grasses. The terrain and lack of obstructions make the site highly suitable for testing wind turbines. Take a tour of the NWTC and its facilities to better understand its location and layout. Another prime feature of the NWTC is the strong directionality of the wind - most of the strong winds come within a few degrees of 285°. West of

213

Design of a 6-DoF Robotic Platform for Wind Tunnel Tests of Floating Wind Turbines  

Science Journals Connector (OSTI)

Abstract Sophisticated computational aero-hydro-elastic tools are being developed for simulating the dynamics of Floating Offshore Wind Turbines (FOWTs). The reliabilty of such prediction tools for designers requires experimental validation. To this end, due to the lack of a large amount of full scale data available, scale tests represent a remarkable tool. Moreover, due to the combined aerodynamic and hydrodynamic contributions to the dynamics of FOWTs, experimental tests should take into account both. This paper presents the design process of a 6-Degrees-of-Freedom robot for simulating the dynamics of \\{FOWTs\\} in wind tunnel scale experiments, as a complementary approach with respect to ocean wind-wave basin scale tests. Extreme events were considered for the definition of the robot requirements and performance. A general overview on the possible design solutions is reported, then the machine architecture as well as the kinematic and dynamic analysis is discussed. Also a motion task related to a 5-MW Floating Offshore Wind Turbine nominal operating condition was considered and then the ability of the robot to reproduce such motions verified in terms of maximum displacements, forces and power, to be within the design boundaries.

I. Bayati; M. Belloli; D. Ferrari; F. Fossati; H. Giberti

2014-01-01T23:59:59.000Z

214

Lake Michigan Offshore Wind Feasibility Assessment  

SciTech Connect (OSTI)

The purpose of this project was to conduct the first comprehensive offshore wind assessment over Lake Michigan and to advance the body of knowledge needed to support future commercial wind energy development on the Great Lakes. The project involved evaluation and selection of emerging wind measurement technology and the permitting, installation and operation of the first mid-lake wind assessment meteorological (MET) facilities in Michigan’s Great Lakes. In addition, the project provided the first opportunity to deploy and field test floating LIDAR and Laser Wind Sensor (LWS) technology, and important research related equipment key to the sitting and permitting of future offshore wind energy development in accordance with public participation guidelines established by the Michigan Great Lakes Wind Council (GLOW). The project created opportunities for public dialogue and community education about offshore wind resource management and continued the dialogue to foster Great Lake wind resource utilization consistent with the focus of the GLOW Council. The technology proved to be effective, affordable, mobile, and the methods of data measurement accurate. The public benefited from a substantial increase in knowledge of the wind resources over Lake Michigan and gained insights about the potential environmental impacts of offshore wind turbine placements in the future. The unique first ever hub height wind resource assessment using LWS technology over water and development of related research data along with the permitting, sitting, and deployment of the WindSentinel MET buoy has captured public attention and has helped to increase awareness of the potential of future offshore wind energy development on the Great Lakes. Specifically, this project supported the acquisition and operation of a WindSentinel (WS) MET wind assessment buoy, and associated research for 549 days over multiple years at three locations on Lake Michigan. Four research objectives were defined for the project including to: 1) test and validate floating LIDAR technology; 2) collect and access offshore wind data; 3) detect and measure bird and bat activity over Lake Michigan; 4) conduct an over water sound propagation study; 5) prepare and offer a college course on offshore energy, and; 6) collect other environmental, bathometric, and atmospheric data. Desk-top research was performed to select anchorage sites and to secure permits to deploy the buoy. The project also collected and analyzed data essential to wind industry investment decision-making including: deploying highly mobile floating equipment to gather offshore wind data; correlating offshore wind data with conventional on-shore MET tower data; and performing studies that can contribute to the advancement and deployment of offshore wind technologies. Related activities included: • Siting, permitting, and deploying an offshore floating MET facility; • Validating the accuracy of floating LWS using near shoreline cup anemometer MET instruments; • Assessment of laser pulse technology (LIDAR) capability to establish hub height measurement of wind conditions at multiple locations on Lake Michigan; • Utilizing an extended-season (9-10 month) strategy to collect hub height wind data and weather conditions on Lake Michigan; • Investigation of technology best suited for wireless data transmission from distant offshore structures; • Conducting field-validated sound propagation study for a hypothetical offshore wind farm from shoreline locations; • Identifying the presence or absence of bird and bat species near wind assessment facilities; • Identifying the presence or absence of benthic and pelagic species near wind assessment facilities; All proposed project activities were completed with the following major findings: • Floating Laser Wind Sensors are capable of high quality measurement and recordings of wind resources. The WindSentinel presented no significant operational or statistical limitations in recording wind data technology at a at a high confidence level as compared to traditional an

Boezaart, Arnold [GVSU; Edmonson, James [GVSU; Standridge, Charles [GVSU; Pervez, Nahid [GVSU; Desai, Neel [University of Michigan; Williams, Bruce [University of Delaware; Clark, Aaron [GVSU; Zeitler, David [GVSU; Kendall, Scott [GVSU; Biddanda, Bopi [GVSU; Steinman, Alan [GVSU; Klatt, Brian [Michigan State University; Gehring, J. L. [Michigan State University; Walter, K. [Michigan State University; Nordman, Erik E. [GVSU

2014-06-30T23:59:59.000Z

215

Facility Representative Program: Basic Courses For Facility Representative  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Training & Qualification Information Training & Qualification Information Qualification Standards DOE Order Self-Study Modules DOE Fundamentals Handbooks Nuclear Safety Basis Self-Study Guide Energy Online Courses Available Link to National Training Center Basic Courses for Facility Representative Qualification Recommended Courses to Expand Facility Representative's Knowledge Base Basic Courses For Facility Rep Qualification (These courses may be beneficial during the initial qualification of Facility Representatives.) Course Title FR FAQS CN Point of Contact Comments Applied Engineering Fundamentals 13 days * See below Mike Schoener 803-641-8166 E-mail Course description at http://ntc.doe.gov course catalog Asbestos Awareness 2 hours 2.1 Federal employees register through the CHRIS system For course details see

216

Wind Technologies & Evolving Opportunities (Presentation)  

SciTech Connect (OSTI)

This presentation covers opportunities for wind technology; wind energy market trends; an overview of the National Wind Technology Center near Boulder, Colorado; wind energy price and cost trends; wind turbine technology improvements; and wind resource characterization improvements.

Robichaud, R.

2014-07-01T23:59:59.000Z

217

Simulating Turbulent Wind Fields for Offshore Turbines in Hurricane-Prone Regions (Poster)  

SciTech Connect (OSTI)

Extreme wind load cases are one of the most important external conditions in the design of offshore wind turbines in hurricane prone regions. Furthermore, in these areas, the increase in load with storm return-period is higher than in extra-tropical regions. However, current standards have limited information on the appropriate models to simulate wind loads from hurricanes. This study investigates turbulent wind models for load analysis of offshore wind turbines subjected to hurricane conditions. Suggested extreme wind models in IEC 61400-3 and API/ABS (a widely-used standard in oil and gas industry) are investigated. The present study further examines the wind turbine response subjected to Hurricane wind loads. Three-dimensional wind simulator, TurbSim, is modified to include the API wind model. Wind fields simulated using IEC and API wind models are used for an offshore wind turbine model established in FAST to calculate turbine loads and response.

Guo, Y.; Damiani, R.; Musial, W.

2014-04-01T23:59:59.000Z

218

An Exploration of Wind Energy & Wind Turbines | Department of...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

An Exploration of Wind Energy & Wind Turbines An Exploration of Wind Energy & Wind Turbines Below is information about the student activitylesson plan from your search. Grades...

219

A National Offshore Wind Strategy: Creating an Offshore Wind...  

Broader source: Energy.gov (indexed) [DOE]

A National Offshore Wind Strategy: Creating an Offshore Wind Energy Industry in the United States A National Offshore Wind Strategy: Creating an Offshore Wind Energy Industry in...

220

20% Wind Energy by 2030 - Chapter 2: Wind Turbine Technology...  

Office of Environmental Management (EM)

20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply U.S. Offshore Wind Manufacturing and Supply Chain Development Wind Program Accomplishments...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Wind pro?le assessment for wind power purposes.  

E-Print Network [OSTI]

??Preliminary estimation of wind speed at the wind turbine hub height is critically important when planning new wind farms. Wind turbine power output is proportional… (more)

Sointu, Iida

2014-01-01T23:59:59.000Z

222

Collegiate Wind Competition Engages Tomorrow's Wind Energy Innovators...  

Office of Environmental Management (EM)

Collegiate Wind Competition Engages Tomorrow's Wind Energy Innovators Collegiate Wind Competition Engages Tomorrow's Wind Energy Innovators January 6, 2014 - 10:00am Addthis 2014...

223

Wind for Schools Project Power System Brief, Wind Powering America...  

Wind Powering America (EERE)

Wind Powering America Fact Sheet Series Energy Efficiency & Renewable Energy Wind for Schools Project Power System Brief Wind for Schools Project Power System Brief Wind for...

224

Western Employee Presents Wind Award to Minnkota | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Western Employee Presents Wind Award to Minnkota Western Employee Presents Wind Award to Minnkota Western Employee Presents Wind Award to Minnkota April 7, 2011 - 2:47pm Addthis Randy Manion Director of Renewable Energy, Western Area Power Administration What are the key facts? The Wind Cooperative of the Year award was created in 2002 to recognize electric cooperatives for leadership in wind development. The 2011 award recognized Minnkota Power Cooperative for developing North Dakota's first utility-owned wind turbine and investing in wind energy. Wind now represents 30 percent of the cooperative's total generation and transmission energy requirements. As the Renewable Energy Program manager for the Western Area Power Administration, I had the opportunity to showcase the Department of Energy's Wind Powering America initiative at the National Rural Electric

225

AIAA-2004-0502 A COMPARISON OF WIND TURBINE DESIGN LOADS IN DIFFERENT  

E-Print Network [OSTI]

in the gross wind environment and in the extreme response given wind conditions to establish nominal designAIAA-2004-0502 1 A COMPARISON OF WIND TURBINE DESIGN LOADS IN DIFFERENT ENVIRONMENTS USING INVERSE, Austin, TX 78712 ABSTRACT* The influence of turbulence conditions on the design loads for wind turbines

Manuel, Lance

226

2009 Wind Technologies Market Report  

E-Print Network [OSTI]

Prepared for the Utility Wind Integration Group. Arlington,Arizona Public Service Wind Integration Cost Impact Study.an Order Revising the Wind Integration Rate for Wind Powered

Wiser, Ryan

2010-01-01T23:59:59.000Z

227

2010 Wind Technologies Market Report  

E-Print Network [OSTI]

2010. SPP WITF Wind Integration Study. Little Rock,an Order Revising the Wind Integration Rate for Wind PoweredPacifiCorp. 2010. 2010 Wind Integration Study. Portland,

Wiser, Ryan

2012-01-01T23:59:59.000Z

228

2011 Wind Technologies Market Report  

E-Print Network [OSTI]

and K. Porter. 2011. Wind Power and Electricity Markets.41 6. Wind Power Priceat Various Levels of Wind Power Capacity Penetration Wind

Bolinger, Mark

2013-01-01T23:59:59.000Z

229

Sandia National Laboratories: Wind Resources  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EnergyWind Resources Wind Resources Comments are closed. Renewable Energy Wind Energy Wind Plant Optimization Test Site Operations & Maintenance Safety: Test Facilities Capital...

230

Sandia National Laboratories: wind energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Energy Manufacturing Lab Helps Engineers Improve Wind Power On November 15, 2011, in Energy, News, Partnership, Renewable Energy, Wind Energy Researchers at the Wind Energy...

231

Wind Energy | Department of Energy  

Office of Environmental Management (EM)

Wind Energy Wind Energy Below are resources for Tribes on wind energy technologies. 2012 Market Report on Wind Technologies in Distributed Applications Includes a breakdown of...

232

Extremal Correlator of Three Vertex Operators for Circular Winding Strings in AdS5xS5  

E-Print Network [OSTI]

We study a three-point correlator of the three heavy vertex operators representing the circular winding string states which are point-like in AdS_5 and rotating with two spins and two winding numbers in S^5. We restrict ourselves to the case that two of the three vertex operators are located at the same point. We evaluate semiclassically the specific three-point correlator on a stationary splitting string trajectory which is mapped to the complex plane with three punctures. It becomes an extremal and 4d conformal invariant three-point correlator on the boundary. The marginality condition of the vertex operator is discussed.

Shijong Ryang

2011-09-15T23:59:59.000Z

233

NREL: Wind Research - Small Wind Turbine Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Small Wind Turbine Research Small Wind Turbine Research The National Renewable Energy Laboratory and U.S. Department of Energy (NREL/DOE) Small Wind Project's objectives are to reduce barriers to wind energy expansion, stabilize the market, and expand the number of small wind turbine systems installed in the United States. "Small wind turbine" refers to a turbine smaller than or equal to 100 kilowatts (kW). "Distributed wind" includes small and midsize turbines (100 kW through 1 megawatt [MW]). Since 1996, NREL's small wind turbine research has provided turbine testing, turbine development, and prototype refinement leading to more commercially available small wind turbines. Work is conducted under the following areas. You can also learn more about state and federal policies

234

Wind Vision Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Wind Farm Wind Farm Jump to: navigation, search Name Wind Vision Wind Farm Facility Wind Vision Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Wind Vision Developer Wind Vision Location St. Ansgar IA Coordinates 43.348224°, -92.888816° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.348224,"lon":-92.888816,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

235

High Winds Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Winds Wind Farm Winds Wind Farm Jump to: navigation, search Name High Winds Wind Farm Facility High Winds Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Energy Purchaser PPM Energy Inc Location Solano County CA Coordinates 38.124844°, -121.764915° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.124844,"lon":-121.764915,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

236

Coastal Ohio Wind Project  

SciTech Connect (OSTI)

The Coastal Ohio Wind Project intends to address problems that impede deployment of wind turbines in the coastal and offshore regions of Northern Ohio. The project evaluates different wind turbine designs and the potential impact of offshore turbines on migratory and resident birds by developing multidisciplinary research, which involves wildlife biology, electrical and mechanical engineering, and geospatial science. Firstly, the project conducts cost and performance studies of two- and three-blade wind turbines using a turbine design suited for the Great Lakes. The numerical studies comprised an analysis and evaluation of the annual energy production of two- and three-blade wind turbines to determine the levelized cost of energy. This task also involved wind tunnel studies of model wind turbines to quantify the wake flow field of upwind and downwind wind turbine-tower arrangements. The experimental work included a study of a scaled model of an offshore wind turbine platform in a water tunnel. The levelized cost of energy work consisted of the development and application of a cost model to predict the cost of energy produced by a wind turbine system placed offshore. The analysis found that a floating two-blade wind turbine presents the most cost effective alternative for the Great Lakes. The load effects studies showed that the two-blade wind turbine model experiences less torque under all IEC Standard design load cases considered. Other load effects did not show this trend and depending on the design load cases, the two-bladed wind turbine showed higher or lower load effects. The experimental studies of the wake were conducted using smoke flow visualization and hot wire anemometry. Flow visualization studies showed that in the downwind turbine configuration the wake flow was insensitive to the presence of the blade and was very similar to that of the tower alone. On the other hand, in the upwind turbine configuration, increasing the rotor blade angle of attack reduced the wake size and enhanced the vortices in the flow downstream of the turbine-tower compared with the tower alone case. Mean and rms velocity distributions from hot wire anemometer data confirmed that in a downwind configuration, the wake of the tower dominates the flow, thus the flow fields of a tower alone and tower-turbine combinations are nearly the same. For the upwind configuration, the mean velocity shows a narrowing of the wake compared with the tower alone case. The downwind configuration wake persisted longer than that of an upwind configuration; however, it was not possible to quantify this difference because of the size limitation of the wind tunnel downstream of the test section. The water tunnel studies demonstrated that the scale model studies could be used to adequately produce accurate motions to model the motions of a wind turbine platform subject to large waves. It was found that the important factors that affect the platform is whether the platform is submerged or surface piercing. In the former, the loads on the platform will be relatively reduced whereas in the latter case, the structure pierces the wave free surface and gains stiffness and stability. The other important element that affects the movement of the platform is depth of the sea in which the wind turbine will be installed. Furthermore, the wildlife biology component evaluated migratory patterns by different monitoring systems consisting of marine radar, thermal IR camera and acoustic recorders. The types of radar used in the project are weather surveillance radar and marine radar. The weather surveillance radar (1988 Doppler), also known as Next Generation Radar (NEXRAD), provides a network of weather stations in the US. Data generated from this network were used to understand general migratory patterns, migratory stopover habitats, and other patterns caused by the effects of weather conditions. At a local scale our marine radar was used to complement the datasets from NEXRAD and to collect additional monitoring parameters such as passage rates, flight paths, flight directi

Gorsevski, Peter; Afjeh, Abdollah; Jamali, Mohsin; Bingman, Verner

2014-04-04T23:59:59.000Z

237

Finding the right conditions for wind power.  

E-Print Network [OSTI]

?? Mitigating the projections of climate change will require large investments in renewableenergy sources. In Sweden, a major share of new renewable energy production will… (more)

Mårtensson, Andreas

2012-01-01T23:59:59.000Z

238

Facility Representative Program: Facility Representative of the Year  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Facility Representative Facility Representative Office of Nuclear Safety Home Facility Representative Home Annual Facility Rep Workshop › 2012 › 2011 › 2010 › 2009 › 2008 › 2007 › 2006 › 2005 › 2004 › 2003 › 2002 › 2001 › 2000 DOE Safety Links › ORPS Info › Operating Experience › DOE Lessons Learned › Accident Investigation Assessment Tools › FR CRADs › Surveillance Guides › Manager's Guide for Safety and Health Subject Matter Links General Program Information › Program Mission Statement › Program Directives and Guidance › FR of the Year Award Program › FR of the Year Award › FR Program Assessment Guide (Appendix B, DOE STD 1063-2011) FR Quarterly Performance Indicators Training & Qualification Information › Qualification Standards › Energy Online Courses

239

Using EOF Analysis to Identify Important Surface Wind Patterns in Mountain Valleys  

SciTech Connect (OSTI)

Empirical orthogonal functions (EOF) have been determined for three wind data sets from stations in valleys south of the Great Salt Lake in Utah. Two of the data sets were for summer months, with individual days selected from the MesoWest archive to represent conditions conducive to well-developed thermally driven flows. The remaining data set was for the month of October 2000 and was derived from a combination of MesoWest data and data collected during intensive observation periods of the Vertical Transport and Mixing eXperiment (VTMX) conducted in the Salt Lake area in October 2000. This experiment investigated stable atmospheric conditions in the complex urban terrain around Salt Lake City, Utah. In all three data sets, the primary EOFs represented flows that were directed predominantly along valley axes and were caused by channeled or thermally driven flow. Diurnal variations in EOF intensity showed that thermal effects were the most common causal mechanism. These along-valley EOFs accounted for 43 to 58 percent of the variance in the wind component data sets (8 or 10 stations each). The second EOFs accounted for 13 to 18 percent of the variance. In the summer data sets, the second EOF appeared to represent day-night transition periods; there was evidence of side canyon flows and day-night transitional effects in the October data set. The EOF approach has promise for classifying wind patterns and selecting cases for simulation or for further detailed analysis.

Ludwig, F. L.; Horel, John D.; Whiteman, Charles D.

2004-07-01T23:59:59.000Z

240

Wind pump systems  

Science Journals Connector (OSTI)

The application of wind mills for water pumping is of lesser importance ... it is useful to discuss this type of wind energy application in a wind energy book targeted at development and planning...

Prof. Dr.-Ing. Robert Gasch; Prof. Dr.-Ing. Jochen Twele

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

NREL: Wind Research - Testing  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the National Wind Technology Center (NWTC) support the installation and testing of wind turbines that range in size from 400 watts to 5.0 megawatts. Engineers provide wind...

242

Fixed Offshore Wind Turbines  

Science Journals Connector (OSTI)

In this chapter, a perspective of offshore wind farms, applied concepts for fixed offshore wind turbines, and related statistics are given. One example of a large wind farm, which is successfully operating, is st...

Madjid Karimirad

2014-01-01T23:59:59.000Z

243

Wind Power Today  

SciTech Connect (OSTI)

Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.

Not Available

2006-05-01T23:59:59.000Z

244

Wind Power Today  

SciTech Connect (OSTI)

Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.

Not Available

2007-05-01T23:59:59.000Z

245

Wind farm noise  

Science Journals Connector (OSTI)

Arrays of small wind turbines recently coined as “wind farms” offer several advantages over single larger wind turbines producing the same electrical power. Noise source characteristics of wind farms are also different from those associated with a single wind turbine. One?third octave band noise measurements from 2 Hz to 10 kHz have been made and will be compared to measurements of noise produced by a single large wind turbine. [J. R. Balombin Technical Memorandum 81486.

Gregory C. Tocci; Brion G. Koning

1981-01-01T23:59:59.000Z

246

VISCOUS ACCRETION OF A POLYTROPIC SELF-GRAVITATING DISK IN THE PRESENCE OF WIND  

SciTech Connect (OSTI)

Self-similar and semi-analytical solutions are found for the height-averaged equations governing the dynamical behavior of a polytropic, self-gravitating disk under the effects of winds around the nascent object. In order to describe the time evolution of the system, we adopt a radius-dependent mass loss rate, then highlight its importance on both the traditional {alpha} and innovative {beta} models of viscosity prescription. In agreement with some other studies, our solutions represent that the Toomre parameter is less than one in most regions on the {beta}-disk, which indicates that in such disks gravitational instabilities can occur at various distances from the central accretor. So, the {beta}-disk model might provide a good explanation of how the planetary systems form. The purpose of the present work is twofold: examining the structure of a disk with wind in comparison to a no-wind solution and seeing whether the adopted viscosity prescription significantly affects the dynamical behavior of the disk-wind system. We also considered the temperature distribution in our disk by a polytropic condition. The solutions imply that, under our boundary conditions, the radial velocity is larger for {alpha}-disks and increases as wind becomes stronger in both viscosity models. Also, we noticed that the disk thickness increases by amplifying the wind or adopting larger values for the polytropic exponent {gamma}. It also may globally decrease if one prescribes a {beta}-model for the viscosity. Moreover, in both viscosity models, the surface density and mass accretion rate diminish as the wind gets stronger or {gamma} increases.

Abbassi, Shahram; Nourbakhsh, Erfan [School of Physics, Damghan University, P.O. Box 36715-364, Damghan (Iran, Islamic Republic of); Shadmehri, Mohsen, E-mail: abbassi@ipm.ir, E-mail: e.nourbakhsh@mail.sbu.ac.ir, E-mail: m.shadmehri@gu.ac.ir [Department of Physics, Golestan University, Basij Square, Gorgan (Iran, Islamic Republic of)

2013-03-10T23:59:59.000Z

247

Simulation of three-dimensional solar wind disturbances and resulting geomagnetic storms  

Science Journals Connector (OSTI)

A kinematic method of representing the three-dimensional solar wind flow is devised by taking into account qualitatively the stream-stream interaction which leads to the formation of a shock pair. Solar wind p...

K. Hakamada; S. -I. Akasofu

1982-01-01T23:59:59.000Z

248

A stochastic model for the daily coordination of pumped storage hydro plants and wind power plants  

Science Journals Connector (OSTI)

We propose a stochastic model for the daily operation scheduling of a generation system including pumped storage hydro plants and wind power plants, where the uncertainty is represented by the hourly wind power p...

Maria Teresa Vespucci; Francesca Maggioni…

2012-03-01T23:59:59.000Z

249

Examining the Impact of Surface Currents on Satellite Scatterometer and Altimeter Ocean Winds  

Science Journals Connector (OSTI)

A 5-yr dataset collected over two surface current and meteorological moorings allows rigorous evaluation of questions surrounding wave–current interaction and the scatterometer. Results demonstrate that scatterometer winds represent winds relative ...

Amanda M. Plagge; Douglas Vandemark; Bertrand Chapron

2012-12-01T23:59:59.000Z

250

NREL: Wind Research - Offshore Wind Resource Characterization  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Offshore Wind Resource Characterization Offshore Wind Resource Characterization Map of the United States, showing the wind potential of offshore areas across the country. Enlarge image US offshore wind speed estimates at 90-m height NREL scientists and engineers are leading efforts in resource mapping, remote sensor measurement and development, and forecasting that are essential for the development of offshore wind. Resource Mapping For more than 15 years, NREL's meteorologists, engineers, and Geographic Information System experts have led the production of wind resource characterization maps and reports used by policy makers, private industry, and other government organizations to inform and accelerate the development of wind energy in the United States. Offshore wind resource data and mapping has strategic uses. As with terrestrial developments, traditional

251

NREL: Wind Research - Midsize Wind Turbine Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Midsize Wind Turbine Research Midsize Wind Turbine Research To facilitate the development and commercialization of midsize wind turbines (turbines with a capacity rating of more than 100 kW up to 1 MW), the U.S. Department of Energy (DOE) and NREL launched the Midsize Wind Turbine Development Project. In its latest study, NREL determined that there is a substantial market for midsize wind turbines. One of the most significant barriers to the midsize turbine market is the lack of turbines available for deployment; there are few midsize turbines on the market today. The objectives of the Midsize Wind Turbine Development Project are to reduce the barriers to wind energy expansion by filling an existing domestic technology gap; facilitate partnerships; accelerate maturation of existing U.S. wind energy businesses; and incorporate process improvement

252

Diablo Winds Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Diablo Winds Wind Farm Diablo Winds Wind Farm Facility Diablo Winds Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Energy Purchaser Pacific Gas & Electric Co Location Altamont Pass CA Coordinates 37.7347°, -121.652° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.7347,"lon":-121.652,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

253

Wind for Schools (Poster)  

SciTech Connect (OSTI)

As the United States dramatically expands wind energy deployment, the industry is challenged with developing a skilled workforce and addressing public resistance. Wind Powering America's Wind for Schools project addresses these issues by developing Wind Application Centers (WACs) at universities; WAC students assist in implementing school wind turbines and participate in wind courses, by installing small wind turbines at community "host" schools, by implementing teacher training with interactive curricula at each host school. This poster provides an overview of the first two years of the Wind for Schools project, primarily supporting activities in Colorado, Kansas, Nebraska, South Dakota, Montana, and Idaho.

Baring-Gould, I.

2010-05-01T23:59:59.000Z

254

Wind Turbine Tribology Seminar  

Broader source: Energy.gov [DOE]

Wind turbine reliability issues are often linked to failures of contacting components, such as bearings, gears, and actuators. Therefore, special consideration to tribological design in wind...

255

Wind energy bibliography  

SciTech Connect (OSTI)

This bibliography is designed to help the reader search for information on wind energy. The bibliography is intended to help several audiences, including engineers and scientists who may be unfamiliar with a particular aspect of wind energy, university researchers who are interested in this field, manufacturers who want to learn more about specific wind topics, and librarians who provide information to their clients. Topics covered range from the history of wind energy use to advanced wind turbine design. References for wind energy economics, the wind energy resource, and environmental and institutional issues related to wind energy are also included.

None

1995-05-01T23:59:59.000Z

256

Northern Wind Farm  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a draft environmental assessment (EA) on the proposed interconnection of the Northern Wind Farm (Project) in Roberts County, near the city of Summit, South Dakota. Northern Wind,...

257

Wind Program News  

Broader source: Energy.gov (indexed) [DOE]

eerewindwind-program-news en EERE Leadership Celebrates Offshore Wind in Maine http:energy.goveerearticleseere-leadership-celebrates-offshore-wind-maine

258

British wind band music.  

E-Print Network [OSTI]

??I have chosen to be assessed as an interpreter and conductor of British wind band music from the earliest writings for wind band up to,… (more)

Jones, GO

2005-01-01T23:59:59.000Z

259

WINDExchange: Wind Energy Ordinances  

Wind Powering America (EERE)

Wind Energy Ordinances Federal, state, and local regulations govern many aspects of wind energy development. The exact nature of the project and its location will largely drive the...

260

Wind Program: WINDExchange  

Wind Powering America (EERE)

Version Bookmark and Share WINDExchange logo WINDExchange is the U.S. Department of Energy (DOE) Wind Program's platform for disseminating credible information about wind...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

WINDExchange: Siting Wind Turbines  

Wind Powering America (EERE)

Wind Wildlife Institute (AWWI) facilitates timely and responsible development of wind energy, while protecting wildlife and wildlife habitat. AWWI was created and is sustained by...

262

WINDExchange: Collegiate Wind Competition  

Wind Powering America (EERE)

& Teaching Materials Resources Collegiate Wind Competition The U.S. Department of Energy (DOE) Collegiate Wind Competition challenges interdisciplinary teams of undergraduate...

263

ARM - Wind Chill Calculations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Wind Chill Calculations Wind Chill is the apparent temperature felt on the exposed human...

264

Calibrated Probabilistic Forecasting at the Stateline Wind Energy Center  

E-Print Network [OSTI]

Calibrated Probabilistic Forecasting at the Stateline Wind Energy Center: The Regime at wind energy sites are becoming paramount. Regime-switching space-time (RST) models merge meteorological forecast regimes at the wind energy site and fits a conditional predictive model for each regime

Washington at Seattle, University of

265

Overview of Existing Wind Energy Ordinances  

Broader source: Energy.gov (indexed) [DOE]

government and community, typically to the level of restoring the area(s) where the wind turbines are located to their original condition at the end of the project life or facility...

266

Landowners' Frequently Asked Questions about Wind Development  

Wind Powering America (EERE)

Landowners' Frequently Asked Questions Landowners' Frequently Asked Questions about Wind Development 1 Landowners' Frequently Asked Questions about Wind Development Jay Haley, P.E. 1. How much money can I make? Based on wind projects in southern Minnesota and northern Iowa, landowners can expect to receive annual land-lease payments ranging from $2,000 to more than $4,000 per turbine. The amount depends on the size of the wind turbine and how much electricity it produces as well as the selling price of the electricity. The same turbine will produce more in one location than another depending on the annual average wind speed at the site. The payments typically represent from 2% to 4% of the annual gross revenue of the turbine. 2. How many turbines can be placed on a section of

267

Chinese Wind Energy Equipment Association CWEEA | Open Energy Information  

Open Energy Info (EERE)

Equipment Association CWEEA Equipment Association CWEEA Jump to: navigation, search Name Chinese Wind Energy Equipment Association (CWEEA) Place Beijing, Beijing Municipality, China Zip 100825 Sector Wind energy Product Association representing Chinese wind energy equipment makers, including organisations engaged in wind turbine assembly and component sub-assemblies. References Chinese Wind Energy Equipment Association (CWEEA)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Chinese Wind Energy Equipment Association (CWEEA) is a company located in Beijing, Beijing Municipality, China . References ↑ "Chinese Wind Energy Equipment Association (CWEEA)" Retrieved from "http://en.openei.org/w/index.php?title=Chinese_Wind_Energy_Equipment_Association_CWEEA&oldid=343566"

268

Module Handbook Specialisation Wind Energy  

E-Print Network [OSTI]

of Wind Turbines Module name: Wind potential, Aerodynamics & Loading of Wind Turbines Section Classes Evaluation of Wind Energy Potential Wind turbine Aerodynamics Static and dynamic Loading of Wind turbines Wind turbine Aerodynamics Static and dynamic Loading of Wind turbines Credit points 8 CP

Habel, Annegret

269

Sandia National Laboratories: Wind Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

specialprogramsslide5 windplantoptslide4 rotorinnovationslide3 offshorewindslide2 Materialsslide1 Wind Energy Wind Plant Optimization Materials,...

270

Evaluation of Global Onshore Wind Energy Potential and Generation Costs  

Science Journals Connector (OSTI)

(2)Where Et is the wind technical potential (kWh/year), A is the area of each grid cell (km(2)), ?1 is the availability factor, ?2 is the array efficiency, ? is average installed power density (MW km–2), and ((A?)/(1.5)) represents the number of turbines (1.5 MW GE turbine) in a given grid cell. ... If wind is to play a large role, lower quality wind resources would need to be used, and a bias against the highest speed winds can be less important. ... EEA. Europe’s Onshore and Offshore Wind Energy Potential. ...

Yuyu Zhou; Patrick Luckow; Steven J. Smith; Leon Clarke

2012-06-20T23:59:59.000Z

271

Wind energy resource in Northern Mexico  

Science Journals Connector (OSTI)

Abstract Mexico has installed less wind power compared to the other North American countries. Renewable energy sources only account for 3% of the energy mix in Mexico. The U.S. states bordering Mexico, namely Texas, New Mexico, Arizona, and California, have good wind power resources. Among them, Texas has the highest installed wind power capacity of 10.34 GW. The wind resources in these bordering states indicate that the wind energy resource in Northern Mexico must be assessed; thus, the spatial and temporal information about the wind energy resource was studied. The daily pattern of the wind speed, one per state studied, was obtained. The wind speed was found to exhibit a pattern; it increases from 4 pm until 6 am the following day. The main conclusions are that the state of Tamaulipas has the highest Wind Power Density (WPD) of 1000 W/m2 during September and October, but the north of Nuevo Leon has, in a large part of its territory, an annual WPD greater than 103 W/m2; each state has 1700 useful hours of wind speed above 3 m/s. Northern Mexico has some zones with excellent wind speed as well; the states of Chihuahua, Coahuila, Nuevo Leon and Tamaulipas have a wind speed of over 4.51 m/s across nearly their entire territories. Because Mexico in recent years has been starting to exploit renewable energy sources, the government has mandated energy reform, which improves the conditions for investment in wind energy in Mexico.

Q. Hernández-Escobedo; R. Saldaña-Flores; E.R. Rodríguez-García; F. Manzano-Agugliaro

2014-01-01T23:59:59.000Z

272

Visual impact assessment of offshore wind farms and prior experience  

Science Journals Connector (OSTI)

Energy planners have shifted their attention towards offshore wind power generation and the decision is supported by the public in general, which in the literature has a positive attitude towards offshore wind generation. However, globally only a few offshore wind farms are operating. As more wind farms start operating and more people become experienced with especially the visual impacts from offshore wind farms, the public positive attitude could change if the experienced impacts are different from the initially perceived visual interference. Using a binary logit model, the present paper investigates the relation between different levels of prior experience with visual disamenities from offshore wind farms and perception of visual impacts from offshore wind farms. The differences in prior experience are systematically controlled for sampling respondents living in the areas close to the large scale offshore wind farms Nysted and Horns Rev and by sampling the a group of respondents representing the Danish population, which has little experience with offshore wind farms. Compared to previous results in the literature, the present paper finds that perception of wind power generation is influenced by prior experience. More specifically, the results show that people with experience from offshore wind farms located far from the coast have a significant more positive perception of the visual impacts from offshore wind farms than people with experience from wind farms located closer to the coast. These results are noteworthy on two levels. First of all, the results show that perceptions of offshore wind generation are systematically significantly influenced by prior experience with offshore wind farms. Secondly, and in a policy context, the results indicate that the future acceptance of future offshore wind farms is not independent of the location of existing and new offshore wind farms. This poses for caution in relation to locating offshore wind farms too close to the coast.

Jacob Ladenburg

2009-01-01T23:59:59.000Z

273

ARE660 Wind Generator: Low Wind Speed Technology for Small Turbine Development  

SciTech Connect (OSTI)

This project is for the design of a wind turbine that can generate most or all of the net energy required for homes and small businesses in moderately windy areas. The purpose is to expand the current market for residential wind generators by providing cost effective power in a lower wind regime than current technology has made available, as well as reduce noise and improve reliability and safety. Robert W. Preus’ experience designing and/or maintaining residential wind generators of many configurations helped identify the need for an improved experience of safety for the consumer. Current small wind products have unreliable or no method of stopping the wind generator in fault or high wind conditions. Consumers and their neighbors do not want to hear their wind generators. In addition, with current technology, only sites with unusually high wind speeds provide payback times that are acceptable for the on-grid user. Abundant Renewable Energy’s (ARE) basic original concept for the ARE660 was a combination of a stall controlled variable speed small wind generator and automatic fail safe furling for shutdown. The stall control for a small wind generator is not novel, but has not been developed for a variable speed application with a permanent magnet alternator (PMA). The fail safe furling approach for shutdown has not been used to our knowledge.

Robert W. Preus; DOE Project Officer - Keith Bennett

2008-04-23T23:59:59.000Z

274

Coupled multi-body dynamics and CFD for wind turbine simulation including explicit wind turbulence  

Science Journals Connector (OSTI)

Abstract A high fidelity approach for wind turbine aero-elastic simulations including explicit representation of the atmospheric wind turbulence is presented. The approach uses a dynamic overset computational fluid dynamics (CFD) code for the aerodynamics coupled with a multi-body dynamics (MBD) code for the motion responses to the aerodynamic loads. Mann's wind turbulence model was implemented into the CFD code as boundary and initial conditions. The wind turbulence model was validated by comparing the theoretical one-point spectrum for the three components of the velocity fluctuations, and by comparing the expected statistics from the CFD simulated wind turbulent field with the explicit wind turbulence inlet boundary from Mann model. Extensive simulations based on the proposed coupled approach were conducted with the conceptual NREL 5-MW offshore wind turbine in an increasing level of complexity, analyzing the turbine behavior as elasticity, wind shear and atmospheric wind turbulence are added to the simulations. Results are compared with the publicly available simulations results from OC3 participants, showing good agreement for the aerodynamic loads and blade tip deflections in time and frequency domains. Wind turbulence/turbine interaction was examined for the wake flow. It was found that explicit turbulence addition results in considerably increased wake diffusion. The coupled CFD/MBD approach can be extended to include multibody models of the shaft, bearings, gearbox and generator, resulting in a promising tool for wind turbine design under complex operational environments.

Y. Li; A.M. Castro; T. Sinokrot; W. Prescott; P.M. Carrica

2015-01-01T23:59:59.000Z

275

West Winds Wind Farm | Open Energy Information  

Open Energy Info (EERE)

West Winds Wind Farm West Winds Wind Farm Facility West Winds Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Caithness Developer SeaWest Energy Purchaser Southern California Edison/PacifiCorp Location San Gorgonio CA Coordinates 33.9095°, -116.734° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.9095,"lon":-116.734,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

276

756 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 4, NO. 3, JULY 2013 Minimization of Wind Farm Operational  

E-Print Network [OSTI]

756 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 4, NO. 3, JULY 2013 Minimization of Wind Farm) of wind turbine at time , denoted as 0 or 1. Energy consumed by an idle wind turbine. Electricity spot, and Guanglin Xu Abstract--Scheduling a wind farm in the presence of uncertain wind speed conditions

Kusiak, Andrew

277

Howard County- Wind Ordinance  

Broader source: Energy.gov [DOE]

This ordinance sets up provisions for allowing small wind energy systems in various zoning districts.

278

Acoustic wind and wind?shear measuring system  

Science Journals Connector (OSTI)

An acoustic wind?profiling system designed to detect hazardous wind?shear conditions in the airport environment has been developed during the past four years. The system installed at Dulles International Airport consists of a vertically pointed transmitter surrounded by three receivers 290?m distant and separated by 120° in azimuth. Electronically steered receiver beams track the upward propagating transmitted tone burst and collect the scatteredacoustic signals. The Doppler frequency shift of the returns is analyzed digitally to determine the horizontal wind at 20 height levels in 30?m increments. Unique design features of the system such as the steered receiver antenna are described. A one?leg prototype of the Dulles system was installed and tested at Table Mountain near Boulder CO. Winds measured by the prototype acoustic system compared well with those determined by an FM?CW radar and a balloon?borne anemometer. Noisegenerated by rain and surface winds exceeding 16 m sec?1 proved to be the major limitations for the acoustic system. Preliminary results from the Dulles system are also presented.

P. A. Mandics; D. W. Beran

1976-01-01T23:59:59.000Z

279

WIND DATA REPORT Ragged Mt Maine  

E-Print Network [OSTI]

...................................................................................................................... 8 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions........................................................................................................... 9 Monthly Average Wind Speeds

Massachusetts at Amherst, University of

280

Wind Powering America  

Wind Powering America (EERE)

These news items are notable additions These news items are notable additions to the Wind Powering America Web site. The Wind Powering America Web site reports recent national and state wind market changes by cataloging wind activities such as wind resource maps, small wind consumer's guides, local wind workshops, news articles, and publications in the areas of policy, public power, small wind, Native Americans, agricultural sector, economic development, public lands, and schools. en-us julie.jones@nrel.gov (Julie Jones) http://www.windpoweringamerica.gov/images/wpa_logo_sm.jpg Wind Powering America http://www.windpoweringamerica.gov/ Nominate an Electric Cooperative for Wind Power Leadership Award by January 15 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4076 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4076 Mon, 16

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

New England Wind Forum: New England Wind Resources  

Wind Powering America (EERE)

New England Wind Forum About the New England Wind Forum New England Wind Energy Education Project Historic Wind Development in New England State Activities Projects in New England Building Wind Energy in New England Wind Resources Wind Power Technology Economics Markets Siting Policy Technical Challenges Issues Small Wind Large Wind Newsletter Perspectives Events Quick Links to States CT MA ME NH RI VT Bookmark and Share New England Wind Resources Go to the Vermont wind resource map. Go to the New Hampshire wind resource map. Go to the Maine wind resource map. Go to the Massachusetts wind resource map. Go to the Connecticut wind resource map. Go to the Rhode Island wind resource map. New England Wind Resource Maps Wind resources maps of Connecticut, Massachusetts, Maine, New Hampshire, Rhode Island, and Vermont.

282

Wind Resource Maps (Postcard)  

SciTech Connect (OSTI)

The U.S. Department of Energy's Wind Powering America initiative provides high-resolution wind maps and estimates of the wind resource potential that would be possible from development of the available windy land areas after excluding areas unlikely to be developed. This postcard is a marketing piece that stakeholders can provide to interested parties; it will guide them to Wind Powering America's online wind energy resource maps.

Not Available

2011-07-01T23:59:59.000Z

283

Wind energy offers considerable promise; the wind itself is free,  

E-Print Network [OSTI]

Wind energy offers considerable promise; the wind itself is free, wind power is clean. One of these sources, wind energy, offers considerable promise; the wind itself is free, wind power is clean, and it is virtually inexhaustible. In recent years, research on wind energy has accelerated

Langendoen, Koen

284

Distributed Wind Diffusion Model Overview (Presentation)  

SciTech Connect (OSTI)

Distributed wind market demand is driven by current and future wind price and performance, along with several non-price market factors like financing terms, retail electricity rates and rate structures, future wind incentives, and others. We developed a new distributed wind technology diffusion model for the contiguous United States that combines hourly wind speed data at 200m resolution with high resolution electricity load data for various consumer segments (e.g., residential, commercial, industrial), electricity rates and rate structures for utility service territories, incentive data, and high resolution tree cover. The model first calculates the economics of distributed wind at high spatial resolution for each market segment, and then uses a Bass diffusion framework to estimate the evolution of market demand over time. The model provides a fundamental new tool for characterizing how distributed wind market potential could be impacted by a range of future conditions, such as electricity price escalations, improvements in wind generator performance and installed cost, and new financing structures. This paper describes model methodology and presents sample results for distributed wind market potential in the contiguous U.S. through 2050.

Preus, R.; Drury, E.; Sigrin, B.; Gleason, M.

2014-07-01T23:59:59.000Z

285

Altered solar wind -magnetosphere interaction at low Mach numbers: coronal mass ejections  

E-Print Network [OSTI]

1 Altered solar wind - magnetosphere interaction at low Mach numbers: coronal mass ejections Benoit fundamental alterations of the solar wind ­ magnetosphere interaction that occur during low Mach number solar wind. We first show that low Mach number solar wind conditions are often characteristic of coronal mass

Boyer, Edmond

286

www.cesos.ntnu.no Author Centre for Ships and Ocean Structures Offshore Wind Turbine Operation  

E-Print Network [OSTI]

1 www.cesos.ntnu.no Author ­ Centre for Ships and Ocean Structures Offshore Wind Turbine Operation icing for offshore Wind Turbines ? · Wherever there is sea icing ! · Temperature bellow zero degree Structures Outline · Introduction · Wind Turbine Operational Conditions · Wind Turbine Operation under

Nørvåg, Kjetil

287

Calibrated Probabilistic Forecasting at the Stateline Wind Energy Center: The Regime-Switching  

E-Print Network [OSTI]

Calibrated Probabilistic Forecasting at the Stateline Wind Energy Center: The Regime at a wind energy site and fits a conditional predictive model for each regime. Geographically dispersed was applied to 2-hour-ahead forecasts of hourly average wind speed near the Stateline wind energy center

Genton, Marc G.

288

Surface wind speed distributions| Implications for climate and wind power.  

E-Print Network [OSTI]

?? Surface constituent and energy fluxes, and wind power depend non-linearly on wind speed and are sensitive to the tails of the wind distribution. Until… (more)

Capps, Scott Blair

2010-01-01T23:59:59.000Z

289

Development of a Control and Monitoring Platform Based on Fuzzy Logic for Wind Turbine Gearboxes .  

E-Print Network [OSTI]

??It is preferable that control and bearing condition monitoring are integrated, as the condition of the system should influence control actions. As wind turbines mainly… (more)

Chen, Wei

2012-01-01T23:59:59.000Z

290

NREL: Wind Research - WindPACT  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

WindPACT WindPACT The Wind Partnerships for Advanced Component Technology (WindPACT) studies were conducted to assist industry by testing innovative components, such as advanced blades and drivetrains, to lower the cost of energy. Specific goals included: Foster technological advancements to reduce the cost of wind energy Determine probable size ranges of advanced utility-scale turbines over the next decade for U.S. application Evaluate advanced concepts that are necessary to achieve objectives of cost and size for future turbines Identify and solve technological hurdles that may block industry from taking advantage of promising technology Design, fabricate, and test selected advanced components to prove their viability Support wind industry through transfer of technology from

291

Wind | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Wind Wind Wind America is home to one of the largest and fastest growing wind markets in the world. Watch the video to learn more about the latest trends in the U.S. wind power market and join us this Thursday, August 8 at 3 pm ET for a Google+ Hangout on wind energy in America. The United States is home to one of the largest and fastest growing wind markets in the world. To stay competitive in this sector, the Energy Department invests in wind projects, both on land and offshore, to advance technology innovations, create job opportunities and boost economic growth. Moving forward, the U.S. wind industry remains a critical part of the Energy Department's all-of-the-above energy strategy to cut carbon pollution, diversify our energy economy and bring the next-generation of

292

Offshore Wind Projects | Department of Energy  

Office of Environmental Management (EM)

Offshore Wind Projects Offshore Wind Projects This report covers the Wind and Water Power Program's offshore wind energy projects from fiscal years 2006 to 2014. Offshore Wind...

293

NREL: Wind Research - Offshore Wind Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

standards Third-party design verification of innovative floating and fixed-bottom wind turbines NREL's standards and testing capabilities address the need to validate our...

294

European Wind Atlas: France | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: France European Wind Atlas: France Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: France Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: 130.226.17.201/extra/web_docs/windmaps/france.jpg Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-france,http://cle Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This wind resource map shows resources at 50 meters above ground level for four different topographic conditions, including sheltered terrain, open plain, coastal and hills and ridges. The greatest resources appear to be near the Mediterranean Sea coast, and the second greatest resources are near the English Channel and northern Atlantic coast.

295

Camden County - Wind Energy Systems Ordinance | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Camden County - Wind Energy Systems Ordinance Camden County - Wind Energy Systems Ordinance Camden County - Wind Energy Systems Ordinance < Back Eligibility Agricultural Commercial Industrial Institutional Local Government Nonprofit Residential Schools State Government Tribal Government Utility Savings Category Wind Buying & Making Electricity Program Info State North Carolina Program Type Solar/Wind Permitting Standards In September 2007, Camden County adopted a wind ordinance to regulate the use of wind-energy systems in the county and to describe the conditions by which a permit for installing such a system may be obtained. For the purposes of this ordinance, wind-energy systems are classified as "large" if they consist of one or more turbines with a rated generating capacity of more than 20 kilowatts (kW) and "small" if a project

296

Improving sound propagation modeling for wind power projects  

Science Journals Connector (OSTI)

Sound propagation from wind power projects can be modeled in the same manner as other more common outdoor noisesources but are these models suited to wind turbines' uniquely high source heights operating under high wind conditions and various degrees of terrain ruggedness. In "Propagation Modeling Parameters for Wind Turbines" (K. Kaliski and E. Duncan Proceedings of Institute of Noise ControlEngineers NOISECON 2007) the effects of ground attenuation and various adjustments for wind conditions on sound propagationmodeling were discussed. This paper continues the discussion and explores the accuracy of existing sound propagationmodeling methods for wind power projects including ISO 9613 and other standards. Model data for wind power projects and the implications of various terrain and ground coverage will be discussed.

Eddie Duncan; Kenneth Kaliski

2008-01-01T23:59:59.000Z

297

2012 Wind Technologies Market Report  

E-Print Network [OSTI]

Colorado: Xcel Energy. 2012 Wind Technologies Market ReportOperator. 2012 Wind Technologies Market Report Chadbourne &Power Company. 2012 Wind Technologies Market Report EnerNex

Wiser, Ryan

2014-01-01T23:59:59.000Z

298

2011 Wind Technologies Market Report  

E-Print Network [OSTI]

2010. SPP WITF Wind Integration Study. Little Rock,GE Energy. 2011a. Oahu Wind Integration Study Final Report.PacifiCorp. 2010. 2010 Wind Integration Study. Portland,

Bolinger, Mark

2013-01-01T23:59:59.000Z

299

NREL: Wind Research - @NWTC Newsletter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NREL Investigates the Logistics of Transporting and Installing Bigger, Taller Wind Turbines NREL Plays Founding, Developmental Role in Major Wind Journal Boosting Wind Plant...

300

2012 Wind Technologies Market Report  

E-Print Network [OSTI]

Department of Energy (DOE). 2008. 20% Wind Energy by2030: Increasing Wind Energy’s Contribution to U.S.Integrating Midwest Wind Energy into Southeast Electricity

Wiser, Ryan

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Sandia National Laboratories: Wind Power  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Energy Staff On March 24, 2011, in Wind Energy On November 10, 2010, in Wind Plant Opt. Rotor Innovation Materials, Reliability & Standards Siting & Barrier Mitigation...

302

Sandia National Laboratories: wind manufacturing  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

manufacturing Wind Energy Manufacturing Lab Helps Engineers Improve Wind Power On November 15, 2011, in Energy, News, Partnership, Renewable Energy, Wind Energy Researchers at the...

303

Study on the Wind and Solar Hybrid Control System  

Science Journals Connector (OSTI)

In the Twelfth Five-Year Plan, a comprehensive layout has been made for the new energy industry as the representative of nuclear energy, wind, solar and so on in the future. The comprehensive utilization of renewable energy for sustainable development ... Keywords: Wind and Solar Hybrid, control system, Pulse width modulation, BOOST

Hua-wei Zhang; Nan Li

2012-12-01T23:59:59.000Z

304

New Reports Highlight Major Potential in Offshore Wind Energy  

Office of Energy Efficiency and Renewable Energy (EERE)

The Energy Department today announced a new report showing steady progress for the U.S. offshore wind energy industry over the past year. The report highlights 14 projects in advanced stages of development, together representing nearly 4,900 megawatts (MW) of potential offshore wind energy capacity for the United States.

305

NREL: Wind Research - Projects  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Projects Projects NREL's wind energy research and development projects focus on reducing the cost of wind technology and expanding access to wind energy sites. Our specialized technical expertise, comprehensive design and analysis tools, and unique testing facilities help industry overcome challenges to bringing new wind technology to the marketplace. Some of these success stories are described in NREL's Wind R&D Success Stories. We also work closely with universities and other national laboratories supporting fundamental research in wind technologies, including aerodynamics, aeroacoustics, and material sciences essential in the development of new blade technologies and advanced controls, power electronics, and testing to further refine drivetrain topology.

306

Wind power today  

SciTech Connect (OSTI)

This publication highlights initiatives of the US DOE`s Wind Energy Program. 1997 yearly activities are also very briefly summarized. The first article describes a 6-megawatt wind power plant installed in Vermont. Another article summarizes technical advances in wind turbine technology, and describes next-generation utility and small wind turbines in the planning stages. A village power project in Alaska using three 50-kilowatt turbines is described. Very brief summaries of the Federal Wind Energy Program and the National Wind Technology Center are also included in the publication.

NONE

1998-04-01T23:59:59.000Z

307

Wind Power Career Chat  

SciTech Connect (OSTI)

This document will teach students about careers in the wind energy industry. Wind energy, both land-based and offshore, is expected to provide thousands of new jobs in the next several decades. Wind energy companies are growing rapidly to meet America's demand for clean, renewable, and domestic energy. These companies need skilled professionals. Wind power careers will require educated people from a variety of areas. Trained and qualified workers manufacture, construct, operate, and manage wind energy facilities. The nation will also need skilled researchers, scientists, and engineers to plan and develop the next generation of wind energy technologies.

Not Available

2011-01-01T23:59:59.000Z

308

Wind energy information guide  

SciTech Connect (OSTI)

This book is divided into nine chapters. Chapters 1--8 provide background and annotated references on wind energy research, development, and commercialization. Chapter 9 lists additional sources of printed information and relevant organizations. Four indices provide alphabetical access to authors, organizations, computer models and design tools, and subjects. A list of abbreviations and acronyms is also included. Chapter topics include: introduction; economics of using wind energy; wind energy resources; wind turbine design, development, and testing; applications; environmental issues of wind power; institutional issues; and wind energy systems development.

NONE

1996-04-01T23:59:59.000Z

309

General Engineer / Physical Scientist (Facility Representative)  

Broader source: Energy.gov [DOE]

Facility Representatives (FRs) are line management's on-site technical representative with responsibility for identifying and evaluating environmental, safety and health issues and concerns,...

310

FAQS Job Task Analyses - Facility Representative | Department...  

Broader source: Energy.gov (indexed) [DOE]

Facility Representative FAQS Job Task Analyses - Facility Representative FAQS Job Task Analyses are performed on the Function Area Qualification Standards. The FAQS Job Task...

311

Incremental wind-wave analysis of the structural capacity of offshore wind turbine support structures under extreme loading  

Science Journals Connector (OSTI)

Abstract Offshore wind turbine (OWT) support structures are subjected to non-proportional environmental wind and wave load patterns with respect to increases in wave height and with respect to wind and wave combined loading. Traditional approaches to estimating the ultimate capacity of offshore support structures are not ideally suited to analysis of OWTs. In this paper, the concept of incremental wind-wave (IWWA) analysis of the structural capacity of OWT support structures is proposed. The approach uses static pushover analysis of OWT support structures subject to wind and wave combined load patterns corresponding to increasing mean return period (MRP). The IWWA framework can be applied as a one-parameter approach (IWWA1) in which the MRP for the wind and wave conditions is assumed to be the same or a two-parameter approach (IWWA2) in which the \\{MRPs\\} associated with wind and wave conditions are related to a joint probability density function characterizing the wind and wave conditions at the site. Example calculations for monopile and jacket supported \\{OWTs\\} at Atlantic marine sites are performed under both one parameter and two parameters IWWA framework. The analyses illustrate that: the results of an IWWA analysis are site specific; and structural response can be dominated by either wind or wave conditions depending on structural characteristics and site conditions. Finally, reliability analyses for both examples excluding uncertainties in structural resistance are estimated based on their IWWA results and probabilistic models for site environmental conditions.

Kai Wei; Sanjay R. Arwade; Andrew T. Myers

2014-01-01T23:59:59.000Z

312

EA-1726: Kahuku Wind Power, LLC Wind Power Generation Facility...  

Broader source: Energy.gov (indexed) [DOE]

6: Kahuku Wind Power, LLC Wind Power Generation Facility, O'ahu, HI EA-1726: Kahuku Wind Power, LLC Wind Power Generation Facility, O'ahu, HI May 3, 2010 EA-1726: Final...

313

Women of Wind Energy Honor Wind Program Researchers | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Women of Wind Energy Honor Wind Program Researchers Women of Wind Energy Honor Wind Program Researchers August 1, 2013 - 2:54pm Addthis This is an excerpt from the Second Quarter...

314

NREL: Wind Research - Events  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Events Events Below are upcoming events related to wind energy technology. February 2014 NASEO Energy Outlook Conference February 4 - 7, 2014 Washington , DC Add to calendar NARUC Winter Committee Meeting February 9 - 12, 2014 United States Contact: Michelle Malloy, NARUC Add to calendar Gearbox Reliability Collaborative All Members Meeting February 10 - 12, 2014 Golden, CO Contact: Beverly Cisneros 303-384-6979 New instrumentation has been installed and calibrated in the high speed section of Gearbox #2 for current dynamometer testing and the improved Gearbox #3 is being manufactured and instrumented. The round robin modeling activity has also completed another data comparison. In addition, the Condition Monitoring and Failure Database activities have been combined into a new Operations & Maintenance Research task.

315

Influence of non-Gaussian wind characteristics on wind turbine extreme response  

Science Journals Connector (OSTI)

Abstract The wind turbulence inflows specified in current wind turbine design standards and turbine response simulation tools are usually modeled as stationary random Gaussian processes. Field measurement data, however, suggest that wind turbulence in complex terrain exhibits non-Gaussian characteristics. This study presents a comprehensive investigation on extreme response of operational and parked wind turbines to non-Gaussian wind field. The non-Gaussian wind fields with specified non-Gaussian statistics and power spectral characteristics are generated using translation process theory and spectral representation method. The wind turbine response time histories at each wind speed bin are simulated. The turbine response statistical moments influenced by the non-Gaussian wind inflow are examined. The extreme response distributions conditional on wind speeds are determined from the simulation data using global maxima method and random process model method. The overall extreme response distribution is then calculated by further integrating the distribution of mean wind speed, which is used to quantify the extreme responses with various mean recurrence intervals (MRIs). The results showed that the non-Gaussian characteristics of wind inflows can result in noticeably larger extremes of blade root edgewise and tower base fore-aft bending moments of operational turbine, and blade root flapwise bending moment of parked turbine. The responses with larger \\{MRIs\\} are more sensitive to the non-Gaussian characteristics of wind inflows. The responses of parked turbine are less sensitive to non-Gaussian, especially, the tower base side-to-side bending moment is almost not affected by non-Gaussian. New insights on the determination of extreme response distribution from random process method are also presented focusing on a better modeling of the response distribution tail.

Kuangmin Gong; Xinzhong Chen

2014-01-01T23:59:59.000Z

316

2008 Wind Energy Projects, Wind Powering America (Poster)  

SciTech Connect (OSTI)

The Wind Powering America program produces a poster at the end of every calendar year that depicts new U.S. wind energy projects. The 2008 poster includes the following projects: Stetson Wind Farm in Maine; Dutch Hill Wind Farm in New York; Grand Ridge Wind Energy Center in Illinois; Hooper Bay, Alaska; Forestburg, South Dakota; Elbow Creek Wind Project in Texas; Glacier Wind Farm in Montana; Wray, Colorado; Smoky Hills Wind Farm in Kansas; Forbes Park Wind Project in Massachusetts; Spanish Fork, Utah; Goodland Wind Farm in Indiana; and the Tatanka Wind Energy Project on the border of North Dakota and South Dakota.

Not Available

2009-01-01T23:59:59.000Z

317

PSCAD Modules Representing PV Generator  

SciTech Connect (OSTI)

Photovoltaic power plants (PVPs) have been growing in size, and the installation time is very short. With the cost of photovoltaic (PV) panels dropping in recent years, it can be predicted that in the next 10 years the contribution of PVPs to the total number of renewable energy power plants will grow significantly. In this project, the National Renewable Energy Laboratory (NREL) developed a dynamic modeling of the modules to be used as building blocks to develop simulation models of single PV arrays, expanded to include Maximum Power Point Tracker (MPPT), expanded to include PV inverter, or expanded to cover an entire PVP. The focus of the investigation and complexity of the simulation determines the components that must be included in the simulation. The development of the PV inverter was covered in detail, including the control diagrams. Both the current-regulated voltage source inverter and the current-regulated current source inverter were developed in PSCAD. Various operations of the PV inverters were simulated under normal and abnormal conditions. Symmetrical and unsymmetrical faults were simulated, presented, and discussed. Both the three-phase analysis and the symmetrical component analysis were included to clarify the understanding of unsymmetrical faults. The dynamic model validation was based on the testing data provided by SCE. Testing was conducted at SCE with the focus on the grid interface behavior of the PV inverter under different faults and disturbances. The dynamic model validation covers both the symmetrical and unsymmetrical faults.

Muljadi, E.; Singh, M.; Gevorgian, V.

2013-08-01T23:59:59.000Z

318

NREL: Wind Research - National Wind Technology Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Center Center The National Renewable Energy Laboratory's (NREL's) National Wind Technology Center (NWTC), located at the base of the foothills just south of Boulder, Colorado, is the nation's premier wind energy technology research facility. Built in 1993, the center provides an ideal environment for the development of advanced wind energy technologies. The goal of the research conducted at the center is to help industry reduce the cost of energy so that wind can compete with traditional energy sources, providing a clean, renewable alternative for our nation's energy needs. Research at the NWTC is organized under two main categories, Wind Technology Development and Testing and Operations. Illustration of the National Wind Technology Center's organization chart. Fort Felker is listed as the Center Director, with Mike Robinson, Deputy Center Director; Paul Veers, Chief Engineer, and Laura Davis and Dorothy Haldeman beneath him. The Associate Director position is empty. Beneath them is the Wind Technology Research and Development Group Manager, Mike Robinson; the Testing and Operations Group Manager, Dave Simms; and the Offshore Wind and Ocean Power Systems Acting Supervisor, Fort Felker.

319

Wind Rose Bias Correction  

Science Journals Connector (OSTI)

Wind rose summaries, which provide a basis for understanding and evaluating the climatological behavior of local wind, have a directional bias if a conventional method is used in their generation. Three techniques used to remove this bias are ...

Scott Applequist

2012-07-01T23:59:59.000Z

320

GSA Wind Supply Opportunity  

Office of Environmental Management (EM)

Wind Supply Opportunity 1 2 3 Proposed Location * Size: 100-210 MegaWatts *Location: Bureau County, IL *Planned COD: December 2014 or 2015 *Site Control: 17,000 acres *Wind...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Scale Models & Wind Turbines  

Broader source: Energy.gov (indexed) [DOE]

Scale Models and Wind Turbines Grades: 5-8, 9-12 Topics: Wind Energy Owner: Kidwind Project This educational material is brought to you by the U.S. Department of Energy's Office of...

322

Distributed Wind 2015  

Broader source: Energy.gov [DOE]

Distributed Wind 2015 is committed to the advancement of both distributed and community wind energy. This two day event includes a Business Conference with sessions focused on advancing the...

323

Competitive Wind Grants (Vermont)  

Broader source: Energy.gov [DOE]

The Clean Energy Development Fund Board will offer a wind grant program beginning October 1, 2013. The grant program will replace the wind incentives that were originally part of the [http:/...

324

NREL: Wind Research - Awards  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Awards NREL has received many awards for its technical innovations in wind energy. In addition, the research conducted at the National Wind Technology Center (NWTC) at NREL has led...

325

Talbot County- Wind Ordinance  

Broader source: Energy.gov [DOE]

This ordinance amends the Talbot County Code, Chapter 190, Zoning, Subdivision and Land Development, to permit small wind turbine systems with wind turbine towers not to exceed 160 feet in total...

326

Wind Career Map  

K-12 Energy Lesson Plans and Activities Web site (EERE)

This wind career map explores an expanding universe of wind energy occupations, describing diverse jobs across the industry, charting possible progression between them, and identifying the high-quality training necessary to do them well.

327

WINDExchange: Wind Events  

Wind Powering America (EERE)

Sun, 15 Feb 2015 00:00:00 MST 2015 Iowa Wind Power Conference and Iowa Wind Energy Association Midwest Regional Energy Job Fair http:www.iowawindenergy.org...

328

WINDExchange: Wind Potential Capacity  

Wind Powering America (EERE)

area with a gross capacity factor1 of 35% and higher, which may be suitable for wind energy development. AWS Truepower LLC produced the wind resource data with a spatial...

329

Offshore wind metadata management  

Science Journals Connector (OSTI)

Offshore wind energy is gaining more and more attention from industry and research community due to its high potential in producing green energy and lowering price on electricity consumption. However, offshore wind is facing many challenges, and hence ...

Trinh Hoang Nguyen; Rocky Dunlap; Leo Mark; Andreas Prinz; Bjørn Mo Østgren; Trond Friisø

2014-10-01T23:59:59.000Z

330

2008 WIND TECHNOLOGIES MARKET REPORT  

E-Print Network [OSTI]

Prepared for the Utility Wind Integration Group. Arlington,Wind Logics, Inc. 2004. Wind Integration Study—Final Report.EnerNex Corp. 2006. Wind Integration Study for Public

Bolinger, Mark

2010-01-01T23:59:59.000Z

331

How Do Wind Turbines Work?  

Broader source: Energy.gov [DOE]

Instead of using electricity to make wind, like a fan, wind turbines use wind to make electricity. The wind turns the blades, which spin a shaft, which connects to a generator and makes electricity.

332

WINDExchange: Wind Basics and Education  

Wind Powering America (EERE)

locate higher education and training programs. Learn about Wind Learn about how wind energy generates power; where the best wind resources are; how you can get wind power; and...

333

WINDExchange: What Is Wind Power?  

Wind Powering America (EERE)

animation to see how a wind turbine works or take a look inside. Wind power or wind energy describes the process by which the wind is used to generate mechanical power or...

334

The Wind at Our Backs  

Science Journals Connector (OSTI)

...uncertainty that chills U.S. wind farm development. He...serious challenge of siting wind turbines in the United States...a community college wind training program, and...and the nation's first offshore wind project near Nantucket...

Dan Reicher

2012-05-11T23:59:59.000Z

335

Kent County- Wind Ordinance  

Broader source: Energy.gov [DOE]

This ordinance establishes provisions and standards for small wind energy systems in various zoning districts in Kent County, Maryland.

336

Robust model based control method for wind energy production A. Pintea 1  

E-Print Network [OSTI]

Robust model based control method for wind energy production A. Pintea 1 , D. Popescu 1 , Ioana change effects will come to dominate every part of the earth. Wind power energy represents an interesting alternative to traditional forms of obtaining energy. However, the efficiency of wind power strongly depends

Boyer, Edmond

337

Wind Energy Markets, 2. edition  

SciTech Connect (OSTI)

The report provides an overview of the global market for wind energy, including a concise look at wind energy development in key markets including installations, government incentives, and market trends. Topics covered include: an overview of wind energy including the history of wind energy production and the current market for wind energy; key business drivers of the wind energy market; barriers to the growth of wind energy; key wind energy trends and recent developments; the economics of wind energy, including cost, revenue, and government subsidy components; regional and national analyses of major wind energy markets; and, profiles of key wind turbine manufacturers.

NONE

2007-11-15T23:59:59.000Z

338

2009 Wind Technologies Market Report  

E-Print Network [OSTI]

is located in Europe. In contrast, all wind power projectsin Europe. In 2009, for example, more wind power was

Wiser, Ryan

2010-01-01T23:59:59.000Z

339

CONGRESSIONAL BRIEFING Offshore Wind  

E-Print Network [OSTI]

CONGRESSIONAL BRIEFING Offshore Wind Lessons Learned from Europe: Reducing Costs and Creating Jobs Thursday, June 12, 2014 Capitol Visitors Center, Room SVC 215 Enough offshore wind capacity to power six the past decade. What has Europe learned that is applicable to a U.S. effort to deploy offshore wind off

Firestone, Jeremy

340

Offshore Wind Potential Tables  

Wind Powering America (EERE)

Offshore wind resource by state and wind speed interval within 50 nm of shore. Wind Speed at 90 m (ms) 7.0 - 7.5 7.5 - 8.0 8.0 - 8.5 8.5 - 9.0 9.0 - 9.5 9.5 - 10.0 >10.0 Total...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Offshore wind energy systems  

Science Journals Connector (OSTI)

Wind energy systems deployed in the shallow but windy waters of the southern North Sea have the potential to provide more than 20% of UK electricity needs. With existing experience of windmills, and of aircraft and offshore structures, such wind energy systems could be developed within a relatively short timescale. A preliminary assessment of the economics of offshore wind energy systems is encouraging.

P Musgrove

1978-01-01T23:59:59.000Z

342

Wind Turbine Competition Introduction  

E-Print Network [OSTI]

Wind Turbine Competition Introduction: The Society of Hispanic Professional Engineers, SHPE at UTK, wishes to invite you to participate in our first `Wind Turbine' competition as part of Engineer's Week). You will be evaluated by how much power your wind turbine generates at the medium setting of our fan

Wang, Xiaorui "Ray"

343

New England Wind Forum: New England Wind Projects  

Wind Powering America (EERE)

Projects in New England Building Wind Energy in New England Wind Resource Wind Power Technology Economics Markets Siting Policy Technical Challenges Issues Small Wind Large Wind Newsletter Perspectives Events Quick Links to States CT MA ME NH RI VT Bookmark and Share New England Wind Projects This page shows the location of installed and planned New England wind projects. Find windfarms, community-scale wind projects, customer-sited wind projects, small wind projects, and offshore wind projects. Read more information about how to use the Google Map and how to add your wind project to the map. Text version New England Wind Energy Projects Connecticut, East Canaan Wind Connecticut, Klug Farm Connecticut, Phoenix Press Connecticut, Wind Colebrook (South and North)

344

The wind potential impact on the maximum wind energy penetration in autonomous electrical grids  

Science Journals Connector (OSTI)

According to long-term wind speed measurements the Aegean Archipelago possesses excellent wind potential, hence properly designed wind energy applications can substantially contribute to fulfill the energy requirements of the island societies. On top of this, in most islands the electricity production cost is extremely high, while significant insufficient power supply problems are often encountered, especially during the summer. Unfortunately, the stochastic behaviour of the wind and the important fluctuations of daily and seasonal electricity load pose a strict penetration limit for the contribution of wind energy in the corresponding load demand. The application of this limit is necessary in order to avoid hazardous electricity grid fluctuations and to protect the existing thermal power units from operating near or below their technical minima. In this context, the main target of the proposed study is to present an integrated methodology able to estimate the maximum wind energy penetration in autonomous electrical grids on the basis of the available wind potential existing in the Aegean Archipelago area. For this purpose a large number of representative wind potential types have been investigated and interesting conclusions have been derived.

J.K. Kaldellis

2008-01-01T23:59:59.000Z

345

Colliding Winds in Low-Mass Binary Star Systems: wind interactions and implications for habitable planets  

E-Print Network [OSTI]

Context. In binary star systems, the winds from the two components impact each other, leading to strong shocks and regions of enhanced density and temperature. Potentially habitable circumbinary planets must continually be exposed to these interactions regions. Aims. We study, for the first time, the interactions between winds from low-mass stars in a binary system, to show the wind conditions seen by potentially habitable circumbinary planets. Methods. We use the advanced 3D numerical hydrodynamic code Nurgush to model the wind interactions of two identical winds from two solar mass stars with circular orbits and a binary separation of 0.5 AU. As input into this model, we use a 1D hydrodynamic simulation of the solar wind, run using the Versatile Advection Code. We derive the locations of stable and habitable orbits in this system to explore what wind conditions potentially habitable planets will be exposed to during their orbits. Results. Our wind interaction simulations result in the formation of two stron...

Johnstone, C P; Pilat-Lohinger, E; Bisikalo, D; Güdel, M; Eggl, S

2015-01-01T23:59:59.000Z

346

Wind: wind speed and wind power density maps at 10m and 50m above...  

Open Energy Info (EERE)

files of wind speed and wind power density at 10 and 50 m heights. Global data of offshore wind resource as generated by NASA's QuikSCAT SeaWinds scatterometer....

347

Wind: wind speed and wind power density GIS data at 10m and 50m...  

Open Energy Info (EERE)

files of wind speed and wind power density at 10 and 50 m heights. Global data of offshore wind resource as generated by NASA's QuikScat SeaWinds scatterometer....

348

Design of a wind turbine-generator system considering the conformability to wind velocity fluctuations  

SciTech Connect (OSTI)

The conformability of the rated power output of the wind turbine-generator system and of the wind turbine type to wind velocity fluctuations are investigated with a simulation model. The authors examine three types of wind turbines: the Darrieus-Savonius hybrid, the Darrieus proper and the Propeller. These systems are mainly operated at a constant tip speed ratio, which refers to a maximum power coefficient points. As a computed result of the net extracting power, the Darrieus turbine proper has little conformability to wind velocity fluctuations because of its output characteristics. As for the other turbines, large-scale systems do not always have an advantage over small-scale systems as the effect of its dynamic characteristics. Furthermore, it is confirmed that the net extracting power of the Propeller turbine, under wind direction fluctuation, is much reduced when compared with the hybrid wind turbine. Thus, the authors conclude that the appropriate rated power output of the system exists with relation to the wind turbine type for each wind condition.

Wakui, Tetsuya; Hashizume, Takumi; Outa, Eisuke

1999-07-01T23:59:59.000Z

349

Hualapai Wind Project Feasibility Report  

SciTech Connect (OSTI)

The Hualapai Department of Planning and Economic Development, with funding assistance from the U.S. Department of Energy, Tribal Energy Program, with the aid of six consultants has completed the four key prerequisites as follows: 1. Identify the site area for development and its suitability for construction. 2. Determine the wind resource potential for the identified site area. 3. Determine the electrical transmission and interconnection feasibility to get the electrical power produced to the marketplace. 4. Complete an initial permitting and environmental assessment to determine the feasibility for getting the project permitted. Those studies indicated a suitable wind resource and favorable conditions for permitting and construction. The permitting and environmental study did not reveal any fatal flaws. A review of the best power sale opportunities indicate southern California has the highest potential for obtaining a PPA that may make the project viable. Based on these results, the recommendation is for the Hualapai Tribal Nation to move forward with attracting a qualified wind developer to work with the Tribe to move the project into the second phase - determining the reality factors for developing a wind project. a qualified developer will bid to a utility or negotiate a PPA to make the project viable for financing.

Davidson, Kevin [Hualapai Tribe] [Hualapai Tribe; Randall, Mark [Daystar Consulting] [Daystar Consulting; Isham, Tom [Power Engineers] [Power Engineers; Horna, Marion J [MJH Power Consulting LLC] [MJH Power Consulting LLC; Koronkiewicz, T [SWCA Environmental, Inc.] [SWCA Environmental, Inc.; Simon, Rich [V-Bar, LLC] [V-Bar, LLC; Matthew, Rojas [Squire Sanders Dempsey] [Squire Sanders Dempsey; MacCourt, Doug C. [Ater Wynne, LLP] [Ater Wynne, LLP; Burpo, Rob [First American Financial Advisors, Inc.] [First American Financial Advisors, Inc.

2012-12-20T23:59:59.000Z

350

Asthma exacerbations during Santa Ana winds in southern California  

Science Journals Connector (OSTI)

This study investigated the relationship between Santa Ana wind conditions and visits for asthma at a southern California emergency department. Visits to the emergency department for asthma were analyzed retrospectively to determine whether the incidence increased during Santa Ana wind conditions. These northeasterly winds are common during fall and winter in southern California and belong to a class known as Foehn winds. They are characterized by gusty winds, decreased relative humidity, warm temperatures, and decreased levels of airborne pollutants. During a 4-year period, we noted that emergency department visits for asthma increased (3.12 vs. 2.16 visits per day, P winds compared with other weather conditions. Asthmatics presenting during Santa Ana winds appeared to be more ill, as judged by higher admission rates (21.9 vs. 18.7%, P winds were also associated with reduced paniculate matter (PM10) counts (P winds may be a stimulant for some asthmatics. Similar wind patterns in other localities might affect respiratory disease as well.

Stephen W. Corbett

1996-01-01T23:59:59.000Z

351

Prairie Winds Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Prairie Winds Wind Farm Prairie Winds Wind Farm Facility Prairie Winds Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Basin Electric Power Coop/Central Power Electric Coop Developer Basin Electric Power Coop/Central Power Electric Coop Energy Purchaser Basin Electric Power Coop/Central Power Electric Coop Location Near Minot ND Coordinates 48.022927°, -101.291435° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":48.022927,"lon":-101.291435,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

352

Wind energy | Open Energy Information  

Open Energy Info (EERE)

(Redirected from Wind) (Redirected from Wind) Jump to: navigation, search Wind energy is a form of solar energy.[1] Wind energy (or wind power) describes the process by which wind is used to generate electricity. Wind turbines convert the kinetic energy in the wind into mechanical power. A generator can convert mechanical power into electricity[2]. Mechanical power can also be utilized directly for specific tasks such as pumping water. The US DOE developed a short wind power animation that provides an overview of how a wind turbine works and describes the wind resources in the United States. Contents 1 Wind Energy Basics 1.1 Equation for Wind Power 2 DOE Wind Programs and Information 3 Worldwide Installed Capacity 3.1 United States Installed Capacity 4 Wind Farm Development 4.1 Land Requirements

353

Vertical axis wind turbine  

SciTech Connect (OSTI)

Wind turbines are largely divided into vertical axis wind turbines and propeller (Horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with a starting and braking control system. This vertical axis wind turbine is formed by having blades of a proper airfoil fitted to respective supporting arms provided radially from a vertical rotary axis by keeping the blade span-wise direction in parallel with the axis and being provided with a low speed control windmill in which the radial position of each operating piece varies with a centrifugal force produced by the rotation of the vertical rotary axis.

Kato, Y.; Seki, K.; Shimizu, Y.

1981-01-27T23:59:59.000Z

354

Vertical axis wind turbine  

SciTech Connect (OSTI)

Wind turbines are largely divided into vertical axis wind turbines and propeller (Horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with rotational speed control systems. This vertical axis wind turbine is formed by having blades of a proper airfoil fitted to respective supporting arms provided radially from a vertical rotating shaft by keeping the blade span-wise direction in parallel with the shaft and being provided with aerodynamic control elements operating manually or automatically to control the rotational speed of the turbine.

Kato, Y.; Seki, K.; Shimizu, Y.

1981-01-27T23:59:59.000Z

355

Irregular wave runup and overtopping of revetments in the presence of wind  

E-Print Network [OSTI]

not include the effects of strong onshore winds associated with the storms considered in the design conditions. The present study attempts to quantify the effects of onshore wind on irregular wave sunup heights and overtopping rates on revetments for various...

Cinotto, Charles Matthew

2012-06-07T23:59:59.000Z

356

Energy in the Wind  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Provi and BP Energy in the Wind - Exploring Basic Electrical Concepts by Modeling Wind Turbines Curriculum: Wind Power (simple machines, aerodynamics, weather/climatology, leverage, mechanics, atmospheric pressure, and energy resources/transformations) Grade Level: High School Small groups: 2 students Time: Introductory packet will take 2-3 periods. Scientific investigation will take 2-3 periods. (45-50 minute periods) Summary: Students explore basic electrical concepts. Students are introduced to electrical concepts by using a hand held generator utilizing a multimeter, modeling, and designing a wind turbine in a wind tunnel (modifications are given if a wind tunnel is not available). Students investigate how wind nergy is used as a renewable energy resource. e

357

NREL: Wind Research - Publications  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Publications Publications The NREL wind research program develops publications about its R&D activities in wind energy technologies. Below you'll find links to recently published publications, links to the NREL Avian Literature and Publications Databases, and information about the Technical Library at the National Wind Technology Center (NWTC). The NWTC's quarterly newsletter, @NWTC, contains articles on current wind energy research projects and highlights the latest reports, papers, articles, and events published or sponsored by NREL. Subscribe to @NWTC. Selected Publications Featured Publication Large-scale Offshore Wind Power in the United States: Assessment of Opportunities and Barriers Here are some selected NWTC publications: 2011 Cost of Wind Energy Review Built-Environment Wind Turbine Roadmap

358

Offshore wind metadata management  

Science Journals Connector (OSTI)

Offshore wind energy is gaining more and more attention from industry and research community due to its high potential in producing green energy and lowering price on electricity consumption. However, offshore wind is facing many challenges, and hence it is still expensive to install in large scale. It therefore needs to be considered from different aspects of technologies in order to overcome these challenges. One of the problems of the offshore wind is that information comes from different sources with diversity in types and format. Besides, there are existing wind databases that should be utilised in order to enrich the knowledge base of the wind domain. This paper describes an approach to managing offshore wind metadata effectively using semantic technologies. An offshore wind ontology has been developed. The semantic gap between the developed ontology and the relational database is investigated. A prototype system has been developed to demonstrate the use of the ontology.

Trinh Hoang Nguyen; Rocky Dunlap; Leo Mark; Andreas Prinz; Bjørn Mo �stgren; Trond Friisø

2014-01-01T23:59:59.000Z

359

Wind energy conversion system  

DOE Patents [OSTI]

The wind energy conversion system includes a wind machine having a propeller connected to a generator of electric power, the propeller rotating the generator in response to force of an incident wind. The generator converts the power of the wind to electric power for use by an electric load. Circuitry for varying the duty factor of the generator output power is connected between the generator and the load to thereby alter a loading of the generator and the propeller by the electric load. Wind speed is sensed electro-optically to provide data of wind speed upwind of the propeller, to thereby permit tip speed ratio circuitry to operate the power control circuitry and thereby optimize the tip speed ratio by varying the loading of the propeller. Accordingly, the efficiency of the wind energy conversion system is maximized.

Longrigg, Paul (Golden, CO)

1987-01-01T23:59:59.000Z

360

Watauga County - Wind Energy System Ordinance | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Watauga County - Wind Energy System Ordinance Watauga County - Wind Energy System Ordinance Watauga County - Wind Energy System Ordinance < Back Eligibility Agricultural Commercial Industrial Institutional Local Government Nonprofit Residential Schools Tribal Government Utility Savings Category Wind Buying & Making Electricity Program Info State North Carolina Program Type Solar/Wind Permitting Standards Provider Planning and Inspections In 2006, Watauga County adopted a wind ordinance to regulate the use of wind-energy systems in the county and to describe the conditions by which a permit for installing such a system may be obtained. This policy was adopted in the context of an on-going debate over the legal interpretation of the [http://www.ncga.state.nc.us/EnactedLegislation/Statutes/HTML/ByArticle/C...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Ashe County - Wind Energy System Ordinance | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Ashe County - Wind Energy System Ordinance Ashe County - Wind Energy System Ordinance Ashe County - Wind Energy System Ordinance < Back Eligibility Agricultural Commercial Industrial Institutional Investor-Owned Utility Local Government Multi-Family Residential Municipal Utility Nonprofit Residential Rural Electric Cooperative Schools State Government Tribal Government Utility Savings Category Wind Buying & Making Electricity Program Info State North Carolina Program Type Solar/Wind Permitting Standards Provider Ashe County Planning Department In 2007 Ashe County adopted a wind ordinance to regulate the use of wind-energy systems in unincorporated areas of the county and to describe the conditions by which a permit for installing such a system may be obtained. This policy was adopted in the context of an ongoing debate over

362

Wind power manufacturing and supply chain summit USA.  

SciTech Connect (OSTI)

The area of wind turbine component manufacturing represents a business opportunity in the wind energy industry. Modern wind turbines can provide large amounts of electricity, cleanly and reliably, at prices competitive with any other new electricity source. Over the next twenty years, the US market for wind power is expected to continue to grow, as is the domestic content of installed turbines, driving demand for American-made components. Between 2005 and 2009, components manufactured domestically grew eight-fold to reach 50 percent of the value of new wind turbines installed in the U.S. in 2009. While that growth is impressive, the industry expects domestic content to continue to grow, creating new opportunities for suppliers. In addition, ever-growing wind power markets around the world provide opportunities for new export markets.

Hill, Roger Ray

2010-12-01T23:59:59.000Z

363

New England Wind Forum: Buying Wind Power  

Wind Powering America (EERE)

Buying Wind Power Buying Wind Power On this page find information about: Green Marketing Renewable Energy Certificates Green Pricing Green Marketing Green power marketing refers to selling green power in the competitive marketplace, in which multiple suppliers and service offerings exist. In states that have established retail competition, customers may be able to purchase green power from a competitive supplier. Connecticut Connecticut Clean Energy Options Beginning in April 2005, Connecticut's two investor-owned utilities, Connecticut Light and Power and United Illuminating, began to offer a simple, affordable program to their customers for purchasing clean energy such as wind power. In late 2006, stakeholders started to explore a new offering that would convey the price stability of wind energy (and other renewable energy resources) to Connecticut consumers. This new offering is still under development.

364

Facility Representative of the Year Award  

Broader source: Energy.gov (indexed) [DOE]

REPRESENTATIVE OF THE YEAR AWARD PROGRAM REPRESENTATIVE OF THE YEAR AWARD PROGRAM OBJECTIVE The Facility Representative Award Program is a special award designed to recognize superior or exemplary service by a Facility Representative over a period of one year. This special award program has been established in accordance with the requirements of Department of Energy (DOE) Order 331.1C, Employee Performance Management and Recognition Program. FACILITY REPRESENTATIVE OF THE YEAR AWARD The Facility Representative of the Year Award is determined by a panel representing the Chief Health, Safety and Security Officer and managers from the National Nuclear Security Administration (NNSA), the Office of Environmental Management (EM), the Office of Science (SC), and the Office of Nuclear Energy (NE). The Facility Representative Program Manager in

365

DOE Science Showcase - Wind Power  

Office of Scientific and Technical Information (OSTI)

DOE Science Showcase - Wind Power DOE Science Showcase - Wind Power Wind Powering America Wind Powering America is a nationwide initiative of the U.S. Department of Energy's Wind Program designed to educate, engage, and enable critical stakeholders to make informed decisions about how wind energy contributes to the U.S. electricity supply. Wind Power Research Results in DOE Databases IEA Wind Task 26: The Past and Future Cost of Wind Energy, Work Package 2, Energy Citations Database NREL Triples Previous Estimates of U.S. Wind Power Potential, Energy Citations Database Dynamic Models for Wind Turbines and Wind Power Plants, DOE Information Bridge 2012 ARPA-E Energy Innovation Summit: Profiling General Compression: A River of Wind, ScienceCinema, multimedia Solar and Wind Energy Resource Assessment (SWERA) Data from the

366

New England Wind Forum: Selling Wind Power  

Wind Powering America (EERE)

Selling Wind Power Selling Wind Power Markets are either well-developed or developing for each of the 'products' produced by wind generators. These include electricity products and generation attributes. Electricity Electricity can be used in two ways: on-site (interconnected behind a retail customer's meter) of for sales of electricity over the electric grid. On-site generation can displace a portion of a customer's purchases of electricity from the grid. In addition, net metering rules are in place at the state level that in some cases allow generation in excess of on-site load to be sold back to the local utility (see state pages for net metering specifics). For sales over the electricity grid, the Independent System Operator of New England (ISO New England) creates and manages a wholesale market for electric energy, capacity, and ancillary services within the New England Power Pool (NEPOOL). Wind generators may sell their electric energy and capacity in spot markets organized by the ISO, or they may contract with wholesale buyers to sell these products for any term to buyers operating in the ISO New England marketplace. Wind generators do not generally produce other marketable ancillary services. The ISO has rules specific to the operation of wind generators reflecting operations, scheduling, calculation of installed capacity credit, and so forth.

367

Wind to Hydrogen in California: Case Study  

SciTech Connect (OSTI)

This analysis presents a case study in California for a large scale, standalone wind electrolysis site. This is a techno-economic analysis of the 40,000 kg/day renewable production of hydrogen and subsequent delivery by truck to a fueling station in the Los Angeles area. This quantity of hydrogen represents about 1% vehicle market penetration for a city such as Los Angeles (assuming 0.62 kg/day/vehicle and 0.69 vehicles/person) [8]. A wind site near the Mojave Desert was selected for proximity to the LA area where hydrogen refueling stations are already built.

Antonia, O.; Saur, G.

2012-08-01T23:59:59.000Z

368

New England Wind Forum: Siting Considerations  

Wind Powering America (EERE)

Siting Considerations Siting Considerations Choosing a proper site for a wind turbine or farm is critical to a successful project. While the most important factors may vary from site to site, in any given instance a single factor can undermine success of an otherwise superlative project. On the other hand, sometimes a site may be weak in one area but so strong in another area that it is viable, such as a site with very strong winds that is farther than normal from a transmission line. A viable wind energy site generally includes the following key factors: Attractive Wind Resource Landowner and Community Support Feasible Permitting Compatible Land Use Nearby Access to an Appropriate Electrical Interconnect Point Appropriate Site Conditions for Access During Construction and Operations

369

Influence of refraction on wind turbine noise  

E-Print Network [OSTI]

A semi-empirical method is applied to calculate the time-average sound level of wind turbine noise generation and propagation. Both are affected by wind shear refraction. Under upwind conditions the partially ensonified zone separates the fully ensonified zone (close to the turbine) and the shadow zone (far away from the turbine). Refraction is described in terms of the wind speed linear profile fitted to the power law profile. The rotating blades are treated as a two-dimensional circular source in the vertical plane. Inside the partially ensonified zone the effective A-weighted sound power decreases to zero when the receiver moves from the turbine toward the shadow zone. The presented results would be useful in practical applications to give a quick estimate of the effect of refraction on wind turbine noise.

Makarewicz, Rufin

2013-01-01T23:59:59.000Z

370

Promoting Offshore Wind Along the "Fresh Coast" | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Promoting Offshore Wind Along the "Fresh Coast" Promoting Offshore Wind Along the "Fresh Coast" Promoting Offshore Wind Along the "Fresh Coast" October 12, 2010 - 12:18pm Addthis Chris Hart Offshore Wind Team Lead, Wind & Water Power Program When people think about offshore wind power, the first location that comes to mind probably isn't Cleveland, Ohio. Most of the offshore wind turbines installed around the world are operating in salt water, like Europe's North Sea and Baltic Sea, and most of the offshore wind projects proposed in U.S. waters are in the Atlantic Ocean or Gulf of Mexico. But the winds blowing above Lake Erie, only a few miles off the shore from Cleveland, represent a huge potential source of clean, renewable energy that could yield substantial benefits for the regional economy and

371

Effect of Forced Excitation on Wind Turbine with Dynamic Analysis in Deep Offshore Wind in Addition to Japanese Status of Offshore Projects  

Science Journals Connector (OSTI)

In this paper, we tried to estimate the effect of control method on floating offshore wind turbine. The experiment in the water basin revealed that traditional blade pitch control can amplify the platform pitch oscillation of floating wind turbine. In order to understand the physical phenomenon, we used aeroelastic simulation using GH Bladed. Turbine model is based on the turbine used in wind tunnel test. To simulate the pitching motion of floating platform, we used onshore wind turbine model with inflow with oscillating wind speed that simulates relative wind speed change from wind turbine's fore-aft pitching motion. Two types of control method are used; fixed pitch variable speed control which represents before rated state of large wind turbines and variable pitch variable speed control which represents over rated state of large wind turbines. Comparing the relation between wind speed change and rotor thrust force change of two control methods, we made it clear that traditional blade pitch control method make thrust force change almost the inverse of wind speed increase and decrease. From thrust force inverse to wind speed change, tower pitching motion can be amplified. That is, blade pitch control can induce negative damping on tower pitching motion. As a conclusion pitch control can increase larger blade load although pitch control aims to reduce the blade load.

Mitsumasa Iino; Toshiki Chujo; Makoto Iida; Chuichi Arakawa

2012-01-01T23:59:59.000Z

372

NREL: Wind Research - News  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Below are some select news stories from the National Wind Technology Below are some select news stories from the National Wind Technology Center. Subscribe to the RSS feed RSS . Learn about RSS. January 3, 2014 New Modularization Framework Transforms FAST Wind Turbine Modeling Tool The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) recently released an expanded version of its FAST wind turbine computer-aided engineering tool under a new modularization framework. January 2, 2014 The Denver Post Highlights the NWTC's New 5-MW Dynamometer On January 2, a reporter from The Denver Post toured the new 5-megawatt dynamometer test facility at the National Wind Technology Center (NWTC). Archives 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 Printable Version Wind Research Home Capabilities Projects Facilities

373

Wind energy conversion system  

SciTech Connect (OSTI)

This patent describes a wind energy conversion system comprising: a propeller rotatable by force of wind; a generator of electricity mechanically coupled to the propeller for converting power of the wind to electric power for use by an electric load; means coupled between the generator and the electric load for varying the electric power drawn by the electric load to alter the electric loading of the generator; means for electro-optically sensing the speed of the wind at a location upwind from the propeller; and means coupled between the sensing means and the power varying means for operating the power varying means to adjust the electric load of the generator in accordance with a sensed value of wind speed to thereby obtain a desired ratio of wind speed to the speed of a tip of a blade of the propeller.

Longrigg, P.

1987-03-17T23:59:59.000Z

374

Session: Offshore wind  

SciTech Connect (OSTI)

This session at the Wind Energy and Birds/Bats workshop consisted of two presentations. Due to time constraints, a discussion period was not possible. The session addressed the current state of offshore wind energy development. The first presentation ''Monitoring Program and Results: Horns Rev and Nysted'' by Jette Gaarde summarized selected environmental studies conducted to date at operating offshore wind turbine projects in Denmark and lessons from other offshore wind developments in Europe. Wildlife impacts studies from the Danish sites focused on birds, fish, and mammals. The second presentation ''What has the U.S. Wind Industry Learned from the European Example'' by Bonnie Ram provided an update on current permit applications for offshore wind developments in the U.S. as well as lessons that may be drawn from the European experience.

Gaarde, Jette; Ram, Bonnie

2004-09-01T23:59:59.000Z

375

Wind Turbine Blade Design  

K-12 Energy Lesson Plans and Activities Web site (EERE)

Blade engineering and design is one of the most complicated and important aspects of modern wind turbine technology. Engineers strive to design blades that extract as much energy from the wind as possible throughout a range of wind speeds and gusts, yet are still durable, quiet and cheap. A variety of ideas for building turbines and teacher handouts are included in this document and at the Web site.

376

Howden Wind Turbines Ltd | Open Energy Information  

Open Energy Info (EERE)

Howden Wind Turbines Ltd Jump to: navigation, search Name: Howden Wind Turbines Ltd Place: United Kingdom Sector: Wind energy Product: Howden was a manufacturer of wind turbines in...

377

ABO Wind AG | Open Energy Information  

Open Energy Info (EERE)

AG Place: Hessen, Germany Zip: 65193 Sector: Bioenergy, Wind energy Product: German developer of wind and bioenergy generation assets. ABO Wind has no direct holding in any wind...

378

TS Wind Power Developers | Open Energy Information  

Open Energy Info (EERE)

TS Wind Power Developers Jump to: navigation, search Name: TS Wind Power Developers Place: Satara, Maharashtra, India Sector: Wind energy Product: Setting up 30MW wind farm in...

379

Daqing Longjiang Wind Power | Open Energy Information  

Open Energy Info (EERE)

Longjiang Wind Power Jump to: navigation, search Name: Daqing Longjiang Wind Power Place: Daqing, Heilongjiang Province, China Zip: 163316 Sector: Wind energy Product: Local wind...

380

Heilongjiang Lishu Wind Power | Open Energy Information  

Open Energy Info (EERE)

Lishu Wind Power Jump to: navigation, search Name: Heilongjiang Lishu Wind Power Place: Heilongjiang Province, China Sector: Wind energy Product: China-based wind project developer...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

WINDExchange Offshore Wind Webinar: Transmission Planning and...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Offshore Wind Webinar: Transmission Planning and Interconnection for Offshore Wind WINDExchange Offshore Wind Webinar: Transmission Planning and Interconnection for Offshore Wind...

382

Blyth Offshore Wind Ltd | Open Energy Information  

Open Energy Info (EERE)

Blyth Offshore Wind Ltd Jump to: navigation, search Name: Blyth Offshore Wind Ltd Place: United Kingdom Sector: Renewable Energy, Wind energy Product: Blyth Offshore Wind Limited,...

383

2013 Wind Technologies Market Report Presentation | Department...  

Office of Environmental Management (EM)

3 Wind Technologies Market Report Presentation 2013 Wind Technologies Market Report Presentation Presentation summarizing the 2013 Wind Technologies Market Report. 2013 Wind...

384

Environmental Wind Projects | Department of Energy  

Energy Savers [EERE]

Wind Projects Environmental Wind Projects This report covers the Wind and Water Power Technologies Office's environmental wind projects from fiscal years 2006 to 2014....

385

NREL: Wind Research - Research and Development  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Printable Version Wind Research Home Research & Development Utility-Scale Wind Turbines Offshore Wind Turbines Small Wind Turbines Grid Integration Market Acceleration...

386

Workforce Development Wind Projects | Department of Energy  

Energy Savers [EERE]

Workforce Development Wind Projects Workforce Development Wind Projects This report covers the Wind and Water Power Technologies Office's workforce development wind projects from...

387

Environmental Wind Projects | Department of Energy  

Energy Savers [EERE]

Environmental Wind Projects Environmental Wind Projects This report covers the Wind and Water Power Technologies Office's environmental wind projects from fiscal years 2006 to...

388

Sandia National Laboratories: Wind Software Downloads  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

* SAND 2014-3685P * Wind software * wind tools Comments are closed. Renewable Energy Wind Energy Wind Plant Optimization Test Site Operations & Maintenance Safety: Test...

389

Wind Power | Open Energy Information  

Open Energy Info (EERE)

Wind Power Wind Power Jump to: navigation, search Wind Power WIndfarm.Sunset.jpg Wind power is a form of solar energy.[1] Wind is caused by the uneven heating of the atmosphere by the sun, variations in the earth's surface, and rotation of the earth. Mountains, bodies of water, and vegetation all influence wind flow patterns[2], [3]. Wind energy (or wind power) describes the process by which wind is used to generate electricity. Wind turbines convert the energy in wind to electricity by rotating propeller-like blades around a rotor. The rotor turns the drive shaft, which turns an electric generator.[2] Three key factors affect the amount of energy a turbine can harness from the wind: wind speed, air density, and swept area.[4] Mechanical power can also be utilized directly for specific tasks such as

390

Gone with the Wind.  

E-Print Network [OSTI]

?? The purpose of this thesis is to explore disruptions Swedish wind turbines onshore are exposed to, and to estimate their economic impacts on the… (more)

Duncker, Nadja; Klötzer, Anneke

2010-01-01T23:59:59.000Z

391

Barstow Wind Turbine Project  

Broader source: Energy.gov [DOE]

Presentation covers the Barstow Wind Turbine project for the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009.

392

Vertical axis wind turbines  

DOE Patents [OSTI]

A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.

Krivcov, Vladimir (Miass, RU); Krivospitski, Vladimir (Miass, RU); Maksimov, Vasili (Miass, RU); Halstead, Richard (Rohnert Park, CA); Grahov, Jurij (Miass, RU)

2011-03-08T23:59:59.000Z

393

NREL: Innovation Impact - Wind  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Manufacturing Manufacturing Energy Systems Integration Energy Systems Integration Wind turbines must withstand powerful aerodynamic forces unlike any other propeller-drive...

394

Wind energy analysis system .  

E-Print Network [OSTI]

??One of the most important steps to be taken before a site is to be selected for the extraction of wind energy is the analysis… (more)

Koegelenberg, Johan

2014-01-01T23:59:59.000Z

395

Wind Power Forecasting  

Science Journals Connector (OSTI)

The National Center for Atmospheric Research (NCAR) has configured a Wind Power Forecasting System for Xcel Energy that integrates high resolution and ensemble...

Sue Ellen Haupt; William P. Mahoney; Keith Parks

2014-01-01T23:59:59.000Z

396

Wind Program: Publications  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

pres Details Bookmark & Share View Related Product Thumbnail Image 2014 Offshore Wind Market and Economic Analysis The objective of this report is to provide a...

397

Wind Success Stories  

Energy Savers [EERE]

+0000 843456 at http:energy.gov United States Launches First Grid-Connected Offshore Wind Turbine http:energy.goveeresuccess-storiesarticlesunited-states-launches-f...

398

wind_guidance  

Broader source: Energy.gov [DOE]

Guidance to Accompany Non-Availability Waiver of the Recovery Act Buy American Provisions for 5kW and 50kW Wind Turbines

399

Allegany County Wind Ordinance  

Broader source: Energy.gov [DOE]

This ordinance sets requirements for industrial wind energy conversion systems. These requirements include minimum separation distances, setback requirements, electromagnetic interference analysis ...

400

Wind Power , Introduction  

Science Journals Connector (OSTI)

Successful implementation of new technologies requires social acceptance. Historically, for the implementation of wind energy this was considered a relatively simple issue ... strategies. Without much study, soci...

Prof. Lennart Söder

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Wind Power , Introduction  

Science Journals Connector (OSTI)

Successful implementation of new technologies requires social acceptance. Historically, for the implementation of wind energy this was considered a relatively simple issue ... strategies. Without much study, soci...

Prof. Lennart Söder

2012-01-01T23:59:59.000Z

402

Wind Energy Myths  

SciTech Connect (OSTI)

This two-sided fact sheet succinctly outlines and counters the top misconceptions about wind energy. It is well suited for general audiences.

Not Available

2005-05-01T23:59:59.000Z

403

Campbell County Wind Farm  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

environmental assessment (EA) on the proposed interconnection of the Campbell County Wind Farm (Project) in Campbell County, near the city of Pollock, South Dakota. Dakota...

404

Energy from the wind  

Science Journals Connector (OSTI)

The large?scale generation of electrical power by wind turbine fields is discussed. It is shown that the maximum power which can be extracted by a wind turbine is 16/27 or 59.3% of the power available in the wind. An estimate is made of the total electrical power which could be generated in the United States by utilizing wind energy. The material in this paper was presented by the authors in a one?semester course on energy science. It could also be used in an introductory physics class as an illustration of elementary fluid mechanics concepts and of the basic principles of energy and momentum conservation.

David G. Pelka; Robert T. Park; Runbir Singh

1978-01-01T23:59:59.000Z

405

Proceedings Nordic Wind Power Conference  

E-Print Network [OSTI]

Estimation of Possible Power for Wind Plant Control Power Fluctuations from Offshore Wind Farms; Model Validation System grounding of wind farm medium voltage cable grids Faults in the Collection Grid of Offshore systems of wind turbines and wind farms. NWPC presents the newest research results related to technical

406

Optimization of Wind Turbine Operation  

E-Print Network [OSTI]

inclination angle was about 1°. The spinner anemometer measurements were correlated with wind speed and windOptimization of Wind Turbine Operation by Use of Spinner Anemometer TF Pedersen, NN Sørensen, L Title: Optimization of Wind Turbine Operation by Use of Spinner Anemometer Department: Wind Energy

407

Michigan Wind II Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Wind II Wind Farm Wind II Wind Farm Jump to: navigation, search Name Michigan Wind II Wind Farm Facility Michigan Wind II Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Exelon Wind Developer Exelon Wind Energy Purchaser Consumers Energy Location Minden City MI Coordinates 43.6572421°, -82.7681278° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.6572421,"lon":-82.7681278,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

408

20% Wind Energy by 2030: Increasing Wind Energy's Contribution...  

Office of Environmental Management (EM)

: Increasing Wind Energy's Contribution to U.S. Electricity Supply 20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply Here you will find the...

409

NREL: Wind Research - Get to Know a Wind Energy Expert  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Get to Know a Wind Energy Expert The Evolution of a Wind Expert A professional headshot photo of Maureen Hand Maureen Hand Maureen Hand knows wind. Growing up in Glenrock, Wyoming,...

410

American Wind Energy Association Wind Energy Finance and Investment...  

Broader source: Energy.gov (indexed) [DOE]

Wind Energy Finance and Investment Seminar American Wind Energy Association Wind Energy Finance and Investment Seminar October 20, 2014 8:00AM EDT to October 21, 2014 5:00PM EDT...

411

United States Wind Resource Map: Annual Average Wind Speed at...  

Wind Powering America (EERE)

4.0 Source: Wind resource estimates developed by AWS Truepower, LLC for windNavigator . Web: http:www.windnavigator.com | http:www.awstruepower.com. Spatial resolution of wind...

412

WINDExchange: Offshore 90-Meter Wind Maps and Wind Resource Potential  

Wind Powering America (EERE)

Offshore 90-Meter Wind Maps and Wind Resource Potential The U.S. Department of Energy provides 90-meter (m) height, high-resolution wind maps and estimates of the total offshore...

413

Reactive capability limits of wind farms  

Science Journals Connector (OSTI)

Wind Energy Conversion Systems (WECS) technology can be classified into two main types: fixed speed and variable speed. Fixed speed WECS use an induction generator connected directly to the grid while variable speed WECS use a power converter to connect the generator to the grid. Fixed speed WECS require shunt capacitors for reactive power compensation, while variable speed WECS have reactive power capability. Under the Spanish grid code, wind farms have to operate in a range of power factor values. This paper determines the reactive power capability of wind farms equipped with both fixed and variable speed WECS. The reactive power capability can be represented as a reactive capability curve. In this paper, the reactive capability curve is used to calculate the additional reactive power compensation needed to meet the requirements of the Spanish grid code.

Alberto Rios Villacorta; Santiago Arnaltes Gomez; Jose Luis Rodriguez-Amenedo

2005-01-01T23:59:59.000Z

414

WIND BRAKING OF MAGNETARS  

SciTech Connect (OSTI)

We explore the wind braking of magnetars considering recent observations challenging the traditional magnetar model. There is evidence for strong multipole magnetic fields in active magnetars, but the dipole field inferred from spin-down measurements may be strongly biased by particle wind. Recent observations challenging the traditional model of magnetars may be explained naturally by the wind braking scenario: (1) the supernova energies of magnetars are of normal value; (2) the non-detection in Fermi observations of magnetars; (3) the problem posed by low magnetic field soft gamma-ray repeaters; (4) the relation between magnetars and high magnetic field pulsars; and (5) a decreasing period derivative during magnetar outbursts. Transient magnetars with L{sub x}<- E-dot{sub rot} may still be magnetic dipole braking. This may explain why low luminosity magnetars are more likely to have radio emissions. A strong reduction of the dipole magnetic field is possible only when the particle wind is very collimated at the star surface. A small reduction of the dipole magnetic field may result from detailed considerations of magnetar wind luminosity. In the wind braking scenario, magnetars are neutron stars with a strong multipole field. For some sources, a strong dipole field may no longer be needed. A magnetism-powered pulsar wind nebula will be one of the consequences of wind braking. For a magnetism-powered pulsar wind nebula, we should see a correlation between the nebula luminosity and the magnetar luminosity. Under the wind braking scenario, a braking index smaller than three is expected. Future braking index measurement of a magnetar may tell us whether magnetars are wind braking or magnetic dipole braking.

Tong, H. [Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011 (China); Xu, R. X.; Qiao, G. J. [KIAA and School of Physics, Peking University, Beijing 100871 (China); Song, L. M., E-mail: tonghao@xao.ac.cn [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

2013-05-10T23:59:59.000Z

415

Q-Winds satellite hurricane wind retrievals and H*Wind comparisons  

E-Print Network [OSTI]

tailored to extreme wind events. Because of this and precipitation effects, scatterometers have failed/passive scatterometer retrieval algorithm designed specifically for extreme wind events, hereafter identified1 Q-Winds satellite hurricane wind retrievals and H*Wind comparisons Pet Laupattarakasem and W

Hennon, Christopher C.

416

DOE ORP Contracting Officer Representatives - Hanford Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DOE ORP Contracting Officer Representatives DOE - ORP ContractsProcurements ORP Contracts & Procurements Home DOE-ORP Contract Management Plans DOE-ORP Prime Contracts DOE-ORP...

417

Wind Monitoring Report for Fort Wainwright's Donnelly Training Area  

SciTech Connect (OSTI)

Using the wind data collected at a location in Fort Wainwright’s Donnelly Training Area (DTA) near the Cold Regions Test Center (CRTC) test track, Pacific Northwest National Laboratory (PNNL) estimated the gross and net energy productions that proposed turbine models would have produced exposed to the wind resource measured at the meteorological tower (met tower) location during the year of measurement. Calculations are based on the proposed turbine models’ standard atmospheric conditions power curves, the annual average wind speeds, wind shear estimates, and standard industry assumptions.

Orrell, Alice C.; Dixon, Douglas R.

2011-01-18T23:59:59.000Z

418

Offshore Wind Research (Fact Sheet), National Wind Technology Center (NWTC)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Offshore Offshore Wind Research The National Renewable Energy Laboratory is internationally recognized for offshore wind energy research and development (R&D). Its experience and capabilities cover a wide spectrum of wind energy disciplines. NREL's offshore wind R&D efforts focus on critical areas that address the long-term needs of the offshore wind energy industry and the Department of Energy (DOE). R&D efforts include: * Developing offshore design tools and methods * Collaborating with international partners * Testing offshore systems and developing standards * Conducting economic analyses * Characterizing offshore wind resources * Identifying and mitigating offshore wind grid integration challenges and barriers NREL documented the status of offshore wind energy in the United

419

NREL: Wind Research - Utility-Scale Wind Turbine Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

wind turbine research addresses performance and reliability issues that large wind turbines experience throughout their lifespan and reduces system costs through innovative...

420

NREL: Wind Research - National Wind Technology Center Map  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Technology Center in Golden, Colorado Structural Testing Laboratory (STL) As wind turbines grow in size and their blades become longer and more flexible, it becomes more...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Wind Power Today, 2010, Wind and Water Power Program (WWPP) ...  

Office of Environmental Management (EM)

& Publications Wind Program Accomplishments Final Report DE-EE0005380 - Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems A...

422

NREL: Wind Research - NREL Supports Innovative Offshore Wind...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NREL Supports Innovative Offshore Wind Energy Projects Demonstration Projects Eligible for up to 46.7M Additional Funding An offshore wind turbine floating off the coast of...

423

Sinomatech Wind Power Blade aka Sinoma Science Technology Wind...  

Open Energy Info (EERE)

Page Edit History Facebook icon Twitter icon Sinomatech Wind Power Blade aka Sinoma Science Technology Wind Turbine Blade Co Ltd Jump to: navigation, search Name: Sinomatech...

424

20% Wind Energy by 2030: Increasing Wind Energy's Contribution...  

Office of Environmental Management (EM)

Summary) 20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply (Executive Summary) Executive summary of a report on the requirements needed...

425

Reliability analysis of wind turbine at high uncertain wind;.  

E-Print Network [OSTI]

??Wind energy plays a vital role in the renewable energy scenario of newlinethe world The wind turbine systems have complex components which are newlinerepairable The… (more)

Sunder selwyn T

2014-01-01T23:59:59.000Z

426

Feasibility study of offshore wind turbine substructures for southwest offshore wind farm project in Korea  

Science Journals Connector (OSTI)

Abstract Korea has huge potential for offshore wind energy and the first Korean offshore wind farm has been initiated off the southwest coast. With increasing water depth, different substructures of the offshore wind turbine, such as the jacket and multipile, are the increasing focus of attention because they appear to be cost-effective. However, these substructures are still in the early stages of development in the offshore wind industry. The aim of the present study was to design a suitable substructure, such as a jacket or multipile, to support a 5 MW wind turbine in 33 m deep water for the Korean Southwest Offshore Wind Farm. This study also aimed to compare the dynamic responses of different substructures including the monopile, jacket and multipile and evaluate their feasibility. We therefore performed an eigenanalysis and a coupled aero-hydro-servo-elastic simulation under deterministic and stochastic conditions in the environmental conditions in Korea. The results showed that the designed jacket and multipile substructures, together with the modified monopile, were well located at soft–stiff intervals, where most modern utility-scale wind turbine support structures are designed. The dynamic responses of the different substructures showed that of the three substructures, the performance of the jacket was very good. In addition, considering the simple configuration of the multipile, which results in lower manufacturing cost, this substructure can provide another possible solution for Korean’s first offshore wind farm. This study provides knowledge that can be applied for the deployment of large-scale offshore wind turbines in intermediate water depths in Korea.

Wei Shi; Jonghoon Han; Changwan Kim; Daeyong Lee; Hyunkyoung Shin; Hyunchul Park

2015-01-01T23:59:59.000Z

427

2012 Wind Technologies Market Report  

E-Print Network [OSTI]

ERCOT (Brown 2012). Wind power plants with negative offersThermal Power Plants Under Increasing Wind Energy Supply. ”power plants that, among other benefits, lowers the costs of integrating wind

Wiser, Ryan

2014-01-01T23:59:59.000Z

428

2009 Wind Technologies Market Report  

E-Print Network [OSTI]

AWEA). 2010b. AWEA Small Wind Turbine Global Market Survey,html David, A. 2009. Wind Turbines: Industry and Tradewhich new large-scale wind turbines were installed in 2009 (

Wiser, Ryan

2010-01-01T23:59:59.000Z

429

Foundations for offshore wind turbines  

Science Journals Connector (OSTI)

...wind farms, although supplying green energy, tend to provoke some objections...wind farms, although supplying 'green energy', tend to provoke some objections...wind farms, although supplying `green energy', tend to provoke some objections...

2003-01-01T23:59:59.000Z

430

2011 Wind Technologies Market Report  

E-Print Network [OSTI]

Associates. 2010. SPP WITF Wind Integration Study. LittlePool. David, A. 2011. U.S. Wind Turbine Trade in a Changing2011. David, A. 2010. Impact of Wind Energy Installations on

Bolinger, Mark

2013-01-01T23:59:59.000Z

431

Sandia National Laboratories: Offshore Wind  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EnergyOffshore Wind Offshore Wind Sandia executes several projects in support of the DOE Offshore Wind program, which address unique R&D needs related to offshore siting and, in...

432

2011 Wind Technologies Market Report  

E-Print Network [OSTI]

and the drop in wind power plant installations since 2009and the drop in wind power plant installations since 2009towers used in U.S. wind power plants increases from 80% in

Bolinger, Mark

2013-01-01T23:59:59.000Z

433

2010 Wind Technologies Market Report  

E-Print Network [OSTI]

and the drop in wind power plant installations, for example,the decrease in new wind power plant construction. A GrowingRelative Economics of Wind Power Plants Installed in Recent

Wiser, Ryan

2012-01-01T23:59:59.000Z

434

Wind Farms in North America  

E-Print Network [OSTI]

Public Perceptions of a Wind Energy Landscape. Landscape andDepartment of Energy (US DOE) (2008) 20% Wind Energy by2030: Increasing Wind Energy's Contribution to U.S.

Hoen, Ben

2014-01-01T23:59:59.000Z

435

Sandia National Laboratories: wind energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

uses the blade information to generate input files for other tools: The ANSYS ... Wind Energy Staff On March 24, 2011, in Wind Energy On November 10, 2010, in Wind Plant...

436

Foundations for offshore wind turbines  

Science Journals Connector (OSTI)

...T. Thompson Foundations for offshore wind turbines B. W. Byrne G. T...civil-engineering problems encountered for offshore wind turbines. A critical component...energy suppliers. Foundations|Offshore Wind Turbines|Renewable Energy...

2003-01-01T23:59:59.000Z

437

2011 Wind Technologies Market Report  

E-Print Network [OSTI]

the contribution of wind power to electricity consumption,GW per year needed for wind power to contribute 20% of thegrid; such wind turbines can also provide power to off-grid

Bolinger, Mark

2013-01-01T23:59:59.000Z

438

2012 Wind Technologies Market Report  

E-Print Network [OSTI]

the contribution of wind power to electricity consumption,16 GW/year needed for wind power to contribute 20% of thegrid; such wind turbines can also provide power to off-grid

Wiser, Ryan

2014-01-01T23:59:59.000Z

439

2009 Wind Technologies Market Report  

E-Print Network [OSTI]

the contribution of wind power to electricity consumption,per year pace needed for wind power to contribute 20% of thegrid; such wind turbines can also provide power to off-grid

Wiser, Ryan

2010-01-01T23:59:59.000Z

440

2008 WIND TECHNOLOGIES MARKET REPORT  

E-Print Network [OSTI]

First Wind and Noble Environmental Power – to pursue initialdistributed wind turbines can also provide power to off-power to others, sometimes taking some merchant risk 22 – in the wind

Bolinger, Mark

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

2010 Wind Technologies Market Report  

E-Print Network [OSTI]

the contribution of wind power to electricity consumption,are intended to transmit wind power to load centers in theper year pace needed for wind power to contribute 20% of the

Wiser, Ryan

2012-01-01T23:59:59.000Z

442

Kivalina wind generator  

SciTech Connect (OSTI)

The project reported was to construct a system to harness the winds of an Arctic site to generate electricity that would power a greenhouse where fruit and vegetables could be raised for local consumption. The installation of the tower and an Enertech 4K wind generator are described. (LEW)

Aldrich, D.

1984-02-18T23:59:59.000Z

443

Carbon smackdown: wind warriors  

ScienceCinema (OSTI)

July 16. 2010 carbon smackdown summer lecture: learn how Berkeley Lab scientists are developing wind turbines to be used in an urban setting, as well as analyzing what it will take to increase the adoption of wind energy in the U.S.

Glen Dahlbacka of the Accelerator & Fusion Research Division and Ryan Wiser of the Environmental Energy Technologies Division are the speakers.

2010-09-01T23:59:59.000Z

444

Offshore Wind Geoff Sharples  

E-Print Network [OSTI]

Offshore Wind Geoff Sharples geoff@clearpathenergyllc.com #12;Frequently Unanswered Ques?ons · Why don't "they" build more offshore wind? · Why not make the blades bigger? · How big will turbines get? #12;Offshore Resource is Good #12

Kammen, Daniel M.

445

Temporal and spatial patterns in wind stress and wind stress curl over the central Southern California Bight  

Science Journals Connector (OSTI)

In 2001, the U.S. Geological Survey, together with several other federal and municipal agencies, began a series of field programs to determine along and cross-shelf transport patterns over the continental shelves in the central Southern California Bight. As a part of these programs, moorings that monitor winds were deployed off the Palos Verdes peninsula and within San Pedro Bay for six 3–4 month summer and winter periods between 2001 and 2008. In addition, nearly continuous records of winds for this 7-year period were obtained from a terrestrial site at the coast and from a basin site offshore of the long-term coastal site. The mean annual winds are downcoast at all sites. The alongshelf components of wind stress, which are the largest part of the low-frequency wind stress fields, are well correlated between basin, shelf and coastal sites. On average, the amplitude of alongshelf fluctuations in wind stress are 3–4 times larger over the offshore basin, compared to the coastal site, irrespective of whether the fluctuations represent the total, or just the correlated portion of the wind stress field. The curl in the large-scale wind stress tends to be positive, especially in the winter season when the mean wind stress is downcoast and larger at the offshore basin site than at the beach. However, since the fluctuation in wind stress amplitudes are usually larger than the mean, periods of weak negative curl do occur, especially in the summer season when the largest normalized differences in the amplitude of wind stress fluctuations are found in the nearshore region of the coastal ocean. Even though the low-frequency wind stress field is well-correlated over the continental shelf and offshore basins, out to distances of 35 km or more from the coast, winds even 10 km inshore of the beach do not represent the coastal wind field, at least in the summer months. The seasonal changes in the spatial structures in wind stress amplitudes suggest that an assessment of the amplitude of the responses of coastal ocean processes to wind forcing is complex and that the responses may have significant seasonal structures.

Marlene A. Noble; Kurt J. Rosenberger; Leslie K. Rosenfeld; George L. Robertson

2012-01-01T23:59:59.000Z

446

NREL: Wind Research - Facilities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Facilities Facilities Our facilities are designed to meet the wind industry's critical research needs with state-of-the-art design and testing facilities. NREL's unique and highly versatile facilities at the National Wind Technology Center offer research and analysis of wind turbine components and prototypes rated from 400 watts to 3 megawatts. Satellite facilities support the growth of wind energy development across the United States. National Wind Technology Center Facilities Our facilities are contained within a 305-acre area that comprises field test sites, test laboratories, industrial high-bay work areas, machine shops, electronics and instrumentation laboratories, and office areas. In addition, there are hundreds of test articles and supporting components such as turbines, meteorological towers, custom test apparatus, test sheds,

447

Wind Energy Update  

Wind Powering America (EERE)

by the Alliance for Sustainable Energy, LLC. by the Alliance for Sustainable Energy, LLC. Wind Energy Update Wind Powering America January 2012 NATIONAL RENEWABLE ENERGY LABORATORY Evolution of Commercial Wind Technology NATIONAL RENEWABLE ENERGY LABORATORY Small (≤100 kW) Homes Farms Remote Applications (e.g. water pumping, telecom sites, icemaking) Midscale (100-1000 kW) Village Power Hybrid Systems Distributed Power Large, Land-based (1-3 MW) Utility-scale wind farms Large Distributed Power Sizes and Applications Large, Offshore (3-7 MW) Utility-scale wind farms, shallow coastal waters No U.S. installations NATIONAL RENEWABLE ENERGY LABORATORY Capacity & Cost Trends As of January 2012 (AWEA) 0 5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 $- $200 $400 $600 $800 $1,000 $1,200

448

Wind | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Wind Wind Wind EERE plays a key role in advancing America's "all of the above" energy strategy, leading a large network of researchers and other partners to deliver innovative technologies that will make renewable electricity generation cost-competitive with traditional sources of energy. EERE plays a key role in advancing America's "all of the above" energy strategy, leading a large network of researchers and other partners to deliver innovative technologies that will make renewable electricity generation cost-competitive with traditional sources of energy. Image of a wind turbine against a partly cloudy sky. The U.S. Department of Energy (DOE) leads national efforts to improve the performance, lower the costs, and accelerate the deployment of wind energy technologies-both on

449

Song of the Wind  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Song of the Wind Song of the Wind Nature Bulletin No. 318-A October 26, 1968 Forest Preserve District of Cook County Richard B. Ogilvie, President Roland F. Eisenbeis, Supt. of Conservation SONG OF THE WIND The wind is simply air in motion. Air has substance like wood or water, it has pressure, it can acquire heat and hold a temperature, and it can travel from place to place.... The air which affects our lives is a layer seven or eight miles thick, called the troposphere, which is next to the earth. This air has pressure (14.7 pounds per square inch at sea level) and when various factors, one of which is temperature, cause changes in this pressure, the air starts moving. We cannot see it. We can hear it. The song of the wind is the most wonderful music on earth, and at times the most terrifying in its angry moments.

450

Representativeness models of systems: smart grid example  

Science Journals Connector (OSTI)

Given the great emphasis being placed on energy efficiency in contemporary society, in which the smart grid plays a prominent role, this is an opportune time to explore methodologies for appropriately representing system attributes. We suggest this is ... Keywords: Smart grid, System representativeness

Norman Schneidewind

2011-03-01T23:59:59.000Z

451

Solar and Wind Permitting Standards | Open Energy Information  

Open Energy Info (EERE)

Permitting Standards Permitting Standards Jump to: navigation, search Permitting standards can facilitate the installation of wind and solar energy systems by specifying the conditions and fees involved in project development. Some local governments have adopted simplified or expedited permitting standards for wind and/or solar. “Top-of-the-stack” or fast-track permitting saves system owners and project developers time and money. Some states have established maximum fees that local governments may charge for a permit for a solar or wind energy system. In addition, some states have developed (or have supported the development of) model wind ordinances for use by local governments. [1] Contents 1 Solar/Wind Permitting Standards Incentives 2 References Solar/Wind Permitting Standards Incentives

452

Dispersal of measured sound power levels for wind turbines  

Science Journals Connector (OSTI)

The standard IEC 61400?11 provides guidance in the measurement analysis and reporting of acoustic emissions(sound power levels) from wind turbine generator systems. The application of this standard aims to provide accurate results that can be replicated by others. We did several measurement operations according to this standard on various wind farms fitted with many turbine manufacturers on different ground types. Important differences have been noticed with equal working conditions between the most and the less noisy wind turbine on a single farm. We will present these results compared to the manufacturers' guaranteed values and initiate explanations (like the difficulties to link the wind speed at 10m above ground with the wind speed received at hub height; or the influence of wind incidence on blades).

René Gamba; Sébastien Garrigues

2008-01-01T23:59:59.000Z

453

Voltage Impacts of Utility-Scale Distributed Wind  

SciTech Connect (OSTI)

Although most utility-scale wind turbines in the United States are added at the transmission level in large wind power plants, distributed wind power offers an alternative that could increase the overall wind power penetration without the need for additional transmission. This report examines the distribution feeder-level voltage issues that can arise when adding utility-scale wind turbines to the distribution system. Four of the Pacific Northwest National Laboratory taxonomy feeders were examined in detail to study the voltage issues associated with adding wind turbines at different distances from the sub-station. General rules relating feeder resistance up to the point of turbine interconnection to the expected maximum voltage change levels were developed. Additional analysis examined line and transformer overvoltage conditions.

Allen, A.

2014-09-01T23:59:59.000Z

454

Stetson Wind Expansion Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Stetson Wind Expansion Wind Farm Stetson Wind Expansion Wind Farm Jump to: navigation, search Name Stetson Wind Expansion Wind Farm Facility Stetson Wind Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind Developer First Wind Location Washington County ME Coordinates 45.595833°, -67.928628° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.595833,"lon":-67.928628,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

455

NREL: Learning - Wind Energy Basics: How Wind Turbines Work  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wind Energy Basics: How Wind Turbines Work Wind Energy Basics: How Wind Turbines Work We have been harnessing the wind's energy for hundreds of years. From old Holland to farms in the United States, windmills have been used for pumping water or grinding grain. Today, the windmill's modern equivalent-a wind turbine-can use the wind's energy to generate electricity. Wind turbines, like windmills, are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more aboveground, they can take advantage of the faster and less turbulent wind. Turbines catch the wind's energy with their propeller-like blades. Usually, two or three blades are mounted on a shaft to form a rotor. A blade acts much like an airplane wing. When the wind blows, a pocket of low-pressure air forms on the downwind side of the blade. The low-pressure

456

NREL: Wind Research - Grid Integration of Offshore Wind  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Grid Integration of Offshore Wind Grid Integration of Offshore Wind Photograph of a wind turbine in the ocean. Located about 10 kilometers off the coast of Arklow, Ireland, the Arklow Bank offshore wind park consists of seven GE Wind 3.6-MW wind turbines. Much can be learned from the existing land-based integration research for handling the variability and uncertainty of the wind resource. Integration and Transmission One comprehensive grid integration study is the Eastern Wind Integration and Transmission Study (EWITS), in which offshore wind scenarios were analyzed. Nearly 80 GW of offshore wind was studied in the highest penetration scenario. Specific offshore grid distribution and transmission solutions were identified, including cost estimates. With the Atlantic coast likely to lead the way in offshore wind power deployment, EWITS is a benchmark for

457

2012 Wind Technologies Market Report  

E-Print Network [OSTI]

Colorado: Xcel Energy. 2012 Wind Technologies Market ReportDistributed Wind Market Report. PNNL- SA-94583. Washington,2013. 2012 State of the Market Report for PJM. Norristown,

Wiser, Ryan

2014-01-01T23:59:59.000Z

458

European Wind Energy Conference Exhibition  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

European Wind Energy Conference & Exhibition 2009 Parc Chanot, Marseille, France 16-19 March 2009 ACTIVE AERODYNAMIC BLADE CONTROL DESIGN FOR LOAD REDUCTION ON LARGE WIND TURBINES...

459

Solar Wind | Open Energy Information  

Open Energy Info (EERE)

Place: Krasnodar, Romania Zip: 350000 Sector: Solar, Wind energy Product: Russia-based PV product manufacturer. Solar Wind manufactures solar modules and cells. References: Solar...

460

Wind Wildlife Research Meeting X  

Broader source: Energy.gov [DOE]

The biennial Wind Wildlife Research Meeting provides an internationally recognized forum for researchers and wind-wildlife stakeholders to hear contributed papers, view research posters, and listen...

Note: This page contains sample records for the topic "represent wind conditions" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Wind Program | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

upcoming events, funding opportunities, and recent publications. Read more 2014 Offshore Wind Market and Economic Analysis Performed by Navigant 2014 Offshore Wind Market and...

462

Wind and Solar Curtailment: Preprint  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Integration of Wind Power Into Power Systems as Well as on Transmission Networks for Offshore Wind Power Plants London, England October 22 - 24, 2013 Conference Paper NREL...

463

Wind Energy Resources and Technologies  

Broader source: Energy.gov [DOE]

This page provides a brief overview of wind energy resources and technologies supplemented by specific information to apply wind energy within the Federal sector.

464

2010 Wind Technologies Market Report  

E-Print Network [OSTI]

Fish and Wildlife Service?s Draft Land- Based Wind Energywildlife impacts are addressed in the planning, siting, and permitting process for wind

Wiser, Ryan

2012-01-01T23:59:59.000Z

465

2010 Wind Technologies Market Report  

E-Print Network [OSTI]

wind turbine equipment-related costs are assumed to equal 85% of 2010 Wind Technologies Market Report periods to further avoid “noise”

Wiser, Ryan

2012-01-01T23:59:59.000Z

466

Summit Wind Farm, Summit, SD  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a draft environmental assessment (EA) on the proposed interconnection of the Summit Wind Farm (Project) in Roberts County, near the city of Summit, South Dakota. SummitWind,...

467

Wind Career Map: Resource List  

Broader source: Energy.gov [DOE]

The following resources were used in the development of the Wind Career Map, associated job profile information, or are potential resources for interested Wind Career Map viewers.

468

2009 Wind Technologies Market Report  

E-Print Network [OSTI]

selected wind turbine components that include towers (tradeWind turbine transactions differ in the services offered (e.g. , whether towers

Wiser, Ryan

2010-01-01T23:59:59.000Z

469

2008 WIND TECHNOLOGIES MARKET REPORT  

E-Print Network [OSTI]

wind turbine manufacturers: Vestas (nacelles, blades, and towersWind turbine transactions differ in the services offered (e.g. , whether towers

Bolinger, Mark

2010-01-01T23:59:59.000Z

470

Wind is Energy (17 activities)  

K-12 Energy Lesson Plans and Activities Web site (EERE)

A nonfiction test to be read with primary student with basic information about wind as an energy source and hands-on, wind-related activities including

471

WINDExchange: Wind for Schools Project  

Wind Powering America (EERE)

Resources Wind for Schools Project As the United States dramatically expands wind energy deployment, the industry is challenged with developing a highly-educated workforce...

472

Strategic bidding for wind power producers in electricity markets  

Science Journals Connector (OSTI)

Abstract In evolving electricity markets, wind power producers (WPPs) would increase their profit through strategic bidding. However, generated power by \\{WPPs\\} is highly random, which may result into heavy imbalance charges. In markets dominated by wind generators, they would optimize their offered bids, considering rival behavior. In oligopolistic day-ahead electricity markets, this strategic behavior can be represented as a Stochastic Cournot model. Wind uncertainty is represented by scenarios generated using Auto Regressive Moving Average (ARMA) model. With a consideration of wind power uncertainty and imbalance charges, strategic \\{WPPs\\} can maximize their expected payoff or profit through the proposed Nash equilibrium based bidding strategy. Nash equilibrium is obtained using payoff matrix approach. Proposed approach is evaluated on two realistic case studies considering different technical constraints. Obtained results shows that proposed bidding strategy mechanism offers quantum increase in profit for WPPs, when their behavior is modeled in a game theoretic framework. Flexibility of approach offers opportunities for its extension to associated challenges.

Kailash Chand Sharma; Rohit Bhakar; H.P. Tiwari

2014-01-01T23:59:59.000Z

473

The Physics of Wind-Fed Accretion  

E-Print Network [OSTI]

We provide a brief review of the physical processes behind the radiative driving of the winds of OB stars and the Bondi-Hoyle-Lyttleton capture and accretion of a fraction of the stellar wind by a compact object, typically a neutron star, in detached high-mass X-ray binaries (HMXBs). In addition, we describe a program to develop global models of the radiatively-driven photoionized winds and accretion flows of HMXBs, with particular attention to the prototypical system Vela X-1. The models combine XSTAR photoionization calculations, HULLAC emission models appropriate to X-ray photoionized plasmas, improved models of the radiative driving of photoionized winds, FLASH time-dependent adaptive-mesh hydrodynamics calculations, and Monte Carlo radiation transport. We present two- and three-dimensional maps of the density, temperature, velocity, ionization parameter, and emissivity distributions of representative X-ray emission lines, as well as synthetic global Monte Carlo X-ray spectra. Such models help to better constrain the properties of the winds of HMXBs, which bear on such fundamental questions as the long-term evolution of these binaries and the chemical enrichment of the interstellar medium.

Christopher W. Mauche; Duane A. Liedahl; Shizuka Akiyama; Tomasz Plewa

2008-06-05T23:59:59.000Z

474

Cooperative field test program for wind systems  

SciTech Connect (OSTI)

The objectives of the Federal Wind Energy Program, managed by the US Department of Energy (DOE), are (1) to assist industry and utilities in achieving a multi-regional US market penetration of wind systems, and (2) to establish the United States as the world leader in the development of advanced wind turbine technology. In 1984, the program conducted a series of planning workshops with representatives from the wind energy industry to obtain input on the Five-Year Research Plan then being prepared by DOE. One specific suggestion that came out of these meetings was that the federal program should conduct cooperative research tests with industry to enhance the technology transfer process. It was also felt that the active involvement of industry in DOE-funded research would improve the state of the art of wind turbine technology. DOE established the Cooperative Field Test Program (CFTP) in response to that suggestion. This program was one of the first in DOE to feature joint industry-government research test teams working toward common objectives.

Bollmeier, W.S. II; Dodge, D.M.

1992-03-01T23:59:59.000Z

475

Confronting the winds: orientation and flight behaviour of roosting swifts, Apus apus  

Science Journals Connector (OSTI)

...expected to match the wind speed up to the maximum speed that their power capacity allows...stationary ight into the wind at speed W, under...conditions of a convex power func- tion P(V...carried away by the wind. 3. METHODS We used...X-band, 200kW peak power, 0.25ms pulse duration...

2001-01-01T23:59:59.000Z

476

A Climatological Study of Thermally Driven Wind Systems of the U.S. Intermountain West  

Science Journals Connector (OSTI)

This paper investigates the diurnal evolution of thermally driven plain-mountain winds, up- and down-valley winds, up- and downslope winds, and land-lake breezes for summer fair weather conditions in four regions of the Intermountain West where ...

Jebb Q. Stewart; C. David Whiteman; W. James Steenburgh; Xindi Bian

2002-05-01T23:59:59.000Z

477

Economics of Online Structural Health Monitoring of Wind Turbines: Cost Benefit Analysis  

E-Print Network [OSTI]

Economics of Online Structural Health Monitoring of Wind Turbines: Cost Benefit Analysis Jeremy Van monitoring (OSHM) and condition-based maintenance (CBM) of wind turbine blades has the potential to reduce O cost of energy (LCOE) [1]. The costs required to keep wind turbines working in extreme temperatures

McCalley, James D.

478

Exoplanet transit variability: bow shocks and winds around HD 189733b  

Science Journals Connector (OSTI)

......both cases, the maps show the distribution...2.2 Stellar wind model The magnetic surface maps are used as one...conditions in our stellar wind simulation. We...equations, for the wind mass density rhow, gas pressure p w, the velocity of the plasma and......

J. Llama; A. A. Vidotto; M. Jardine; K. Wood; R. Fares; T. I. Gombosi

2013-01-01T23:59:59.000Z

479

Evaluation of Offshore Wind Simulations with MM5 in the Japanese and Danish Coastal Waters  

E-Print Network [OSTI]

Evaluation of Offshore Wind Simulations with MM5 in the Japanese and Danish Coastal Waters Teruo to evaluate the accuracy of offshore wind simulation with the mesoscale model MM5, long-term simulations to simulate offshore wind conditions in the Japanese coastal waters even using a mesoscale model, compared

Heinemann, Detlev

480

Enhanced solar wind geoeffectiveness after a sudden increase in dynamic pressure during southward IMF orientation  

E-Print Network [OSTI]

Enhanced solar wind geoeffectiveness after a sudden increase in dynamic pressure during southward increase in solar wind pressure results in poleward expansion of the auroral oval and closing of the polar show that southward IMF conditions combined with high solar wind dynamic pressure immediately after

Lummerzheim, Dirk

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481

Incentives for the Department's Facility Representative Program,  

Broader source: Energy.gov (indexed) [DOE]

Incentives for the Department's Facility Representative Program, Incentives for the Department's Facility Representative Program, 12/17/1998 Incentives for the Department's Facility Representative Program, 12/17/1998 The Department's Revised Implementation Plan for Defense Nuclear Facilities Safety Board Recommendation 93-3 has once again underscored the Department's commitment to maintaining the technical capability necessary to safely manage and operate our defense nuclear facilities. Attracting and retaining highly qualified employees and placing them in our critical technical positions is vital to fi.dfilling this commitment. You have identified 95'% of your Facility Representative positions as critical technical positions. The Office of Field Management has noted a 12'?40annual attrition rate of Facility Representatives from the Facility

482

IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 26, NO. 4, NOVEMBER 2011 2197 Reserve Requirements for Wind Power Integration: A  

E-Print Network [OSTI]

for Wind Power Integration: A Scenario-Based Stochastic Programming Framework Anthony Papavasiliou, Student-stage stochastic programming model for committing reserves in systems with large amounts of wind power. We describe wind power generation in terms of a representative set of appropriately weighted scenarios, and we

Oren, Shmuel S.

483

Basic Integrative Models for Offshore Wind Turbine Systems  

E-Print Network [OSTI]

wind turbine were studied using a variety of design load, and soil conditions scenarios. Aerodynamic thrust loads were estimated using the FAST Software developed by the U.S Department of Energy’s National Renewable Energy Laboratory (NREL...

Aljeeran, Fares

2012-07-16T23:59:59.000Z

484

New Forecasting Tools Enhance Wind Energy Integration In Idaho...  

Energy Savers [EERE]

mix and what types of other resources-such as quick-start gas- fired units or demand response-will be needed should wind conditions change during the day, as they typically...

485

Stability Improvement of Wind Farms using Shunt and Series Compensation  

E-Print Network [OSTI]

. A comparison is made between the power converter of doubly fed induction generator (DFIG) and static synchronous compensator (STATCOM) for stability improvement of wind farms in normal and faulty condition. DFIG

Pota, Himanshu Roy

486

Experimental Investigation of Wind-Forced Drop Stability  

E-Print Network [OSTI]

aluminum (RA = 3.26 micrometers) floor of a tiltable wind tunnel and brought to critical conditions, when the drop begins to run downstream. Various combinations of drop size, inclination angle, and flow speed were employed. A measurement technique capable...

Schmucker, Jason

2012-10-19T23:59:59.000Z

487

Standards for Municipal Small Wind Regulations and Small Wind Model Wind  

Broader source: Energy.gov (indexed) [DOE]

Standards for Municipal Small Wind Regulations and Small Wind Model Standards for Municipal Small Wind Regulations and Small Wind Model Wind Ordinance Standards for Municipal Small Wind Regulations and Small Wind Model Wind Ordinance < Back Eligibility Agricultural Commercial Fed. Government Industrial Institutional Local Government Nonprofit Residential Schools State Government Tribal Government Utility Savings Category Wind Buying & Making Electricity Program Info State New Hampshire Program Type Solar/Wind Permitting Standards In July 2008, New Hampshire enacted legislation designed to prevent municipalities from adopting ordinances or regulations that place unreasonable limits or hinder the performance of wind energy systems up to 100 kilowatts (kW) in capacity. Such wind turbines must be used primarily to produce energy for on-site consumption. The law identifies a several

488

A first order geometric auto regressive process for boundary layer wind speed simulation  

Science Journals Connector (OSTI)

Under certain conditions the first order geometric auto regressive (AR) process has statistical properties similar to atmospheric boundary layer wind speed. In this contribution, we investigate ... this stochas...

T. Laubrich; H. Kantz

2009-08-01T23:59:59.000Z

489

About First Order Geometric Auto Regressive Processes for Boundary Layer Wind Speed Simulation  

Science Journals Connector (OSTI)

Under certain conditions the first order geometric auto regressive process has statistical properties similar to atmospheric boundary layer wind speed. In this contribution, we investigate ... this stochastic pro...

Thomas Laubrich; Holger Kantz

2010-01-01T23:59:59.000Z

490

Enhanced control of DFIG-based wind power plants to comply with the international grid codes.  

E-Print Network [OSTI]

??A review of the latest international grid codes shows that large wind power plants are stipulated to not only ride-through various fault conditions, but also… (more)

Mohseni, Mansour

2011-01-01T23:59:59.000Z

491

Chu, Salazar to Announce Major Offshore Wind Energy Initiatives |  

Broader source: Energy.gov (indexed) [DOE]

Salazar to Announce Major Offshore Wind Energy Initiatives Salazar to Announce Major Offshore Wind Energy Initiatives Chu, Salazar to Announce Major Offshore Wind Energy Initiatives February 4, 2011 - 12:00am Addthis NORFOLK,VA - On Monday, February 7, 2011 Energy Secretary Steven Chu and Secretary of the Interior Ken Salazar will announce major new initiatives to accelerate the responsible siting and development of offshore wind energy projects. WHAT: Offshore Wind Energy News Conference WHEN: Monday, February 7, 11:00 AM EST WHO: Steven Chu, Secretary of Energy Ken Salazar, Secretary of the Interior WHERE: Half Moone Center 11 Waterside Dr Norfolk, VA 23510 DIAL-IN: News media, state and local stakeholders, industry representatives and other interested parties can join a listen-only teleconference of the announcement by dialing 800-369-3311 and entering code: OFFSHORE.

492

Model Validation at the 204-MW New Mexico Wind Energy Center (Poster)  

SciTech Connect (OSTI)

The objectives of this report are: (1) to investigate the impact of aggregation on a large wind farm; and (2) to explore the dynamic behaviors of the power system and the wind turbine. The methods used are: (1) use equivalencing method previously developed to simplify Taiban Mesa wind power plant; (2) use PSLF dynamic analysis to simulate the wind power plant with AWEA-proposed low voltage ride through (LVRT) used to test the systems; and (3) represent a 204-MW wind plant two ways, treat the entire wind farm feeding a large power system network as a single generator and treat each wind turbine within the wind farm as an individual generator (136 generators) feeding the large power system network.

Muljadi, E.; Butterfield, C. P.; Miller, N.; Delmerico, R.; Ellis, A.; Mechenbier, J.; Zavadil, R.; Smith, J. C.; Hochheimer, J.; Young, R.

2006-01-01T23:59:59.000Z

493

National Wind Technology Center Dynamic 5-Megawatt Dynamometer  

ScienceCinema (OSTI)

The National Wind Technology Center (NWTC) offers wind industry engineers a unique opportunity to conduct a wide range of tests. Its custom-designed dynamometers can test wind turbine systems from 1 kilowatt (kW) to 5 megawatts (MW). The NWTC's new dynamometer facility simulates operating field conditions to assess the reliability and performance of wind turbine prototypes and commercial machines, thereby reducing deployment time, failures, and maintenance or replacement costs. Funded by the U.S. Department of Energy with American Recovery and Reinvestment Act (ARRA) funds, the 5-MW dynamometer will provide the ability to test wind turbine drivetrains and connect those drivetrains directly to the electricity grid or through a controllable grid interface (CGI). The CGI tests the low-voltage ride-through capability of a drivetrain as well as its response to faults and other abnormal grid conditions.

Felker, Fort

2014-06-10T23:59:59.000Z

494

Order-of-magnitude enhancement of wind farm power density via counter-rotating vertical-axis wind turbine arrays  

E-Print Network [OSTI]

Modern wind farms require significant land resources to separate each wind turbine from the adjacent turbine wakes. These aerodynamic constraints limit the amount of power that can be extracted from a given wind farm footprint. We conducted full-scale field tests of vertical-axis wind turbines in counter-rotating configurations under natural wind conditions. Whereas wind farms consisting of propeller-style turbines produce 2 to 3 watts of power per square meter of land area, these field tests indicate that power densities approaching 100 W m^-2 can be achieved by arranging vertical-axis wind turbines in layouts that enable them to extract energy from adjacent wakes. In addition, we calculated that the global wind resource available to 10-m tall turbines based on the present approach is approximately 225 trillion watts (TW), which significantly exceeds the global wind resource available to 80-m tall, propeller-style wind turbines, approximately 75 TW. This improvement is due to the closer spacing that can be a...

Dabiri, John O

2010-01-01T23:59:59.000Z

495

Air Conditioning  

Science Journals Connector (OSTI)

Air Conditioning ... CHEMISTS and engineers use air conditioning as a valuable tool in more than two hundred industries. ... Air conditioning is a tool with many facets. ...

MARGARET INGELS

1938-02-10T23:59:59.000Z

496

Landscape Characterization and Representativeness Analysis for Understanding Sampling Network Coverage  

SciTech Connect (OSTI)

Sampling networks rarely conform to spatial and temporal ideals, often comprised of network sampling points which are unevenly distributed and located in less than ideal locations due to access constraints, budget limitations, or political conflict. Quantifying the global, regional, and temporal representativeness of these networks by quantifying the coverage of network infrastructure highlights the capabilities and limitations of the data collected, facilitates upscaling and downscaling for modeling purposes, and improves the planning efforts for future infrastructure investment under current conditions and future modeled scenarios. The work presented here utilizes multivariate spatiotemporal clustering analysis and representativeness analysis for quantitative landscape characterization and assessment of the Fluxnet, RAINFOR, and ForestGEO networks. Results include ecoregions that highlight patterns of bioclimatic, topographic, and edaphic variables and quantitative representativeness maps of individual and combined networks.

Maddalena, Damian; Hoffman, Forrest; Kumar, Jitendra; Hargrove, William

2014-08-01T23:59:59.000Z

497

Landscape Characterization and Representativeness Analysis for Understanding Sampling Network Coverage  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Sampling networks rarely conform to spatial and temporal ideals, often comprised of network sampling points which are unevenly distributed and located in less than ideal locations due to access constraints, budget limitations, or political conflict. Quantifying the global, regional, and temporal representativeness of these networks by quantifying the coverage of network infrastructure highlights the capabilities and limitations of the data collected, facilitates upscaling and downscaling for modeling purposes, and improves the planning efforts for future infrastructure investment under current conditions and future modeled scenarios. The work presented here utilizes multivariate spatiotemporal clustering analysis and representativeness analysis for quantitative landscape characterization and assessment of the Fluxnet, RAINFOR, and ForestGEO networks. Results include ecoregions that highlight patterns of bioclimatic, topographic, and edaphic variables and quantitative representativeness maps of individual and combined networks.

Maddalena, Damian; Hoffman, Forrest; Kumar, Jitendra; Hargrove, William

498

New England Wind Forum: Markets  

Wind Powering America (EERE)

Markets Markets Selling Wind Power Wind generators interconnected directly to the transmission or distribution grid, or sized in excess of the load of a host end-user, interact with either well-developed or developing markets for the products produced by wind generators: electricity and generation attributes. Buying Wind Power Individuals, companies, institutions, and governments throughout New England have a number of opportunities to buying wind power or support the development of wind power. The links below take you to information on opportunities and guidance for buying wind power in New England. Motivations for Buying Wind Power Buying Wind Power Resources and Tools for Large Energy Users Printable Version Skip footer navigation to end of page. New England Wind Forum Home | Wind Program Home | EERE Home | U.S. Department of Energy

499

Wind News | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Wind News Wind News Wind News RSS February 7, 2011 Salazar, Chu Announce Major Offshore Wind Initiatives Strategic plan, $50 million in R&D funding, identified Wind Energy Areas will speed offshore wind energy development December 16, 2010 Department of Energy Finalizes Loan Guarantee to Support World's Largest Wind Project 845-Megawatt Wind Facility Will Create Hundreds of Jobs and Avoid Over 1.2 Million Tons of Carbon Dioxide Annually October 29, 2010 Statement by Energy Secretary Steven Chu on Today's Grand Opening of the Nordex Manufacturing Facility in Jonesboro, Arkansas Recovery Act investment creates jobs, helps lay the foundation for a clean energy economy September 13, 2010 DOE Announces More than $5 Million to Support Wind Energy Development Funds to Enhance Short-Term Wind Forecasting and Accelerate Midsize Wind

500

Midsize Wind Turbines for the U.S. Community Wind Market | Department...  

Broader source: Energy.gov (indexed) [DOE]

Midsize Wind Turbines for the U.S. Community Wind Market Midsize Wind Turbines for the U.S. Community Wind Market Midsize Wind Turbines for the U.S. Community Wind Market More...